There are both numbers and letters in algebra. Numbers are constant, i.e. e. The unknown quantities in the algebraic formula are represented by letters or alphabets. The 9 formulas of algebra are explained further.
Define algebra and its 9 formulas?Algebra is a mathematical tool that we use to calculate distances, volumes, and perimeters of spaces as well as to calculate costs, rent things out, and understand time relationships.
Algebraic equations come in five main categories. We can tell them apart by the variables' positions, the types of operators and functions being used, and the behavior of the graphs. Each equation has a different probable input and generates a different result based on analysis.The 9 formulas of algebra are explained as:
a² – b² = (a-b)(a+b)(a+b)² = a² + 2ab + b²(a-b)² = a² – 2ab + b²a² + b² = (a-b)² +2ab.(a+b+c)² = a²+b²+c²+2ab+2ac+2bc.(a-b-c)² = a²+b²+c²-2ab-2ac+2bc.a³-b³ = (a-b) (a² + ab + b²)a³+b³ = (a+b) (a² – ab + b²)(aⁿ)(aˣ) = aⁿ⁺ˣ (ab)ⁿ = aⁿˣTo know more about the algebra, here
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Question 3 (1 point)
Writes an equation that can be used to show the relationship between the side lengths of the
triangle based on the Pythagorean Theorem.
261 cm²
O a
Ob
Oc
Od
19 cm
19 cm
Question 3 of 5 | Page 3 of 5
x² +261 = 19
x + 261 = 19
x² +261² = 19²
x² +261 = 19²
On solving the provided question, An expression that finds the sum of x and y => X + Y
What is an expression?a collection of numbers, symbols, and operators (like + and ) that represent a value. Examples - 2 + 3 is a formula and there is also the statement 3 x/2. The equals symbol does not appear in expressions. Actually, none of these = ≠ < > ≤ ≥
We frequently have to understand a written phrase in order to write an expression. For instance, the notation x + 6 can be used to represent the phrase "6 added to some number," where x stands for the unknown value.
An expression that finds the sum of x and y -
=> X + Y
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-11с(а-d) + 121c²(a-d)² a=4 c=2 d= - 2,5
The value of the expression at, a= 4, c = 2, and d = - 2.5 is 18768.75.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, An expression -11с(а - d) + 121c²(a - d)² at, a= 4, c = 2 and d = - 2.5.
Simplifying the expression -11с(а - d) + 121c²(a - d)² we have,
= -11с(а - d) + (11c)²(a - d)².
= - 11c[(a - d) - 11c(a - d)²].
= - 11×2[4 + 2.5) - 11×2(4 + 2.5)²].
= - 22[6.25 - 22(6.25)²].
= - 22[6.25 - 22×39.0625].
= - 22[6.25 - 859.375].
= - 22[- 853.125].
= 18768.75.
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In triangle below, angle p is a right angle. Suppose that m angle q =(3x+25) and m angle r = (4x+30).
(A) write an equation to find x. Make sure you use an “=“ sign in your answer.
(B) find the degree measure of each angle.
(A) To find x, we can use the fact that the measures of the angles in a triangle must add up to 180 degrees. So we can write an equation using that information and the measures of angles q and r:
m angle q + m angle r + 90 = 180
(3x+25) + (4x+30) + 90 = 180
so:
7x+45 = 90
7x = 45
x = 45/7 = 5
(B) To find the degree measure of each angle, we can substitute x = 5 back into the expressions for angles q and r.
m angle q = (3x+25) = (3*5+25) = 40 degrees
m angle r = (4x+30) = (4*5+30) = 50 degrees
Since the angle p is a right angle, it has a degree measure of 90 degrees.
So the angle measures are: angle q = 40 degrees, angle r = 50 degrees, angle p = 90 degrees.
(7+3) x 4 ÷ 2 - 5 x 6
Answer:
The order of operations (PEMDAS) should be followed to solve mathematical expressions: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
So the solution for (7+3) x 4 ÷ 2 - 5 x 6
= (10) x 4 ÷ 2 - 5 x 6
= 40 ÷ 2 - 5 x 6
= 20 - 5 x 6
= 20 - 30
= -10
So the solution is -10
Answer:
7 + 3 = 10
10 * 4 = 40
40 / 2 = 20
20 - 5 = 15
15 * 6 = 90!
Step-by-step explanation:
Hope it helps ! =D
A circular garden with a radius of 8 feet is surrounded by a circular path with a width of 3 feet. What is the approximate area of the path alone? Use 3.14 for π
The area of the path alone is equal to 178.98 square feet.
What is the area of the path alone?Remember that the area of a circle of radius R is:
A = pi*R^2
Where pi = 3.14
The area of the path alone will be equal to the difference between the areas of the circles where the path is included (radius of 11ft) and the area of the garden alone (radius is 8ft)
Then the area of the path alone is:
A = 3.14*(11 ft)^2 - 3.14*( 8 ft)^2
A = 178.98 ft^2
That is the approximate area of the path alone.
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help its fro a test and I been doing it all day For
graph equation or inequality.
2y – 4x < 8
The graph of the equation or inequality 2y – 4x < 8 is given the in the attachment.
What is inequality?The term inequality refers to a mathematical expression with unequal sides. An inequality compares two values and determines whether one is less, greater, or equal to the value on the other side of the equation. In general, inequality equations are represented by five inequality symbols.
The inequality symbols are less than (<), greater than (>), less than or equal (≤), greater than or equal (≥), and not equal (≠).
Inequalities are used to compare numbers and determine the range or ranges of values that satisfy the conditions of a given variable.
Given that:
2y – 4x < 8
2y < 4x +8
y < 2x + 4
Plot this on graph.
Thus, y < 2x + 4 is inequality to be plotted on the graph.
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Given that 1 pound equal 16 ounce, what i the ratio of 1 pound, 4 ounce to 3 pound, 10 ounce
Our required ratio will be 8: 2: 24: 5 as per the given problem.
In our question, it is given that 1 Pound is equal to 16 ounces.
We will use this criterion for the rest of our solution.
Let’s convert all pounds to ounces.
1 pound =16 ounce
3 pound = 48 ounce
Now as per the problem, we have to find the ratio of 1 pound, 4 ounces, 3 pounds, 10 ounces.
= 1 pound: 4 ounces: 3 pounds: 10 ounce
= 16 ounces: 4 ounces: 48 ounces: 10 ounce
= 8: 2 : 24: 5
So our required ratio is 8: 2 : 24: 5.
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How to get good grades in grade 7
Answer:
Use brainly. or pay better attention in class.
Step-by-step explanation:
What is a 3 2 image?
A 3:2 aspect ratio image is a rectangular image where the width is 3 units and the height is 2 units. It means that the width of the image is 1.5 times its height.
This aspect ratio is commonly used in photography, as it is the standard aspect ratio of 35mm film cameras, and also it's used in some digital cameras, DSLRs, and mirrorless cameras.
A 3:2 aspect ratio image can be thought of as a rectangle that has a width of 3 units and a height of 2 units. When you take a picture with a 3:2 aspect ratio, it will have a width that is 50% larger than its height. This allows for a larger view of the subject, and also it is more suitable for landscape images and portrait images.
It's worth noting that other aspect ratios are also used in photography such as 4:3, 16:9, and 1:1, it depends on the camera's sensor and the photographer's preference.
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Find all solutions of the equation cos x (2 sin x + 1) = 0. on the
interval [0, 27).
The answers are A, B, C and D where 0 < A < B
for T.
A =
B =
C=
D =
Answer:
A = 0,
B = π/2,
C = 3π/2,
D = 2π
Step-by-step explanation:
How to simplify Question B?
The expressions when simplified become :
a. x ³ × y ²
b. 6x ² × y ³
How to simplify the expressions ?To simplify the first expression, take x to the power of the number of times it appears and do the same for y. This means that x × x × x × y × y would become:
= x ³ × y ²
In the second expression, first collect like terms so that 2 × x × x × 3 × y × y × y becomes:
= 2 × 3 × x × x × y × y × y
= 6 x ² × y ³
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test due tonight help please
graph each equation or inequality.
-4y > -x + 12
The solution is the set of all points (x,y) that satisfy the inequality y < x/4 - 3.
What is the graph of a function?
The graph of a function is a visual representation of the relationship between the input values (x-coordinates) and the output values (y-coordinates) of the function. In other words, it is a visual representation of the function's rule.
The graph of a function can take many different forms, depending on the function's rule. Linear functions, for example, will produce a straight line on the graph.
-4y > -x + 12 is a linear inequality. To solve this inequality, we can start by isolating y:
y < x/4 - 3
This inequality is in slope-intercept form (y = mx + b), where the slope is m = -1/4 and the y-intercept is b = -3.
To graph the solution, you can pick a few x-values and substitute them into the inequality to find the corresponding y-values.
You can use x = -8, x = -4, x = 0, x = 4, x = 8 for example and find the y-values for each x, y < -8/4 -3 = -2, y < -4/4 -3 = -1, y < 0/4 -3 = -3, y < 4/4 -3 = -1 and y < 8/4 -3 = -1/2.
Then plot those points on a coordinate plane and draw the line that goes through them, and shade the half-plane that is above the line
Hence, the solution is the set of all points (x,y) that satisfy the inequality y < x/4 - 3.
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If it now today, then iwill wear my glove. If i weaar my glove , my finger will get itchy
I understand your dilemma. I suggest that you look for a glove that is made of a breathable material. Also, make sure that the glove fits properly so that there is no tightness or restriction of movement. Lastly, make sure to wear the glove for brief periods at first and gradually increase the time as your skin gets used to it.
1. Look for a glove made of a breathable material: Breathable materials allow for air circulation and can help prevent excess sweat and irritation.
2. Make sure the glove fits properly: It should not be too tight or too loose.
3. Wear the glove for brief periods at first: This will help your skin adjust to the glove and prevent iching
4. Gradually increase the time: Once your skin gets used to the glove, you can start wearing it for longer periods of time. I understand your dilemma. I suggest that you look for a glove that is made of a breathable material. Also, make sure that the glove fits properly so that there is no tightness or restriction of movement. Lastly, make sure to wear the glove for brief periods at first and gradually increase the time as your skin gets used to it.
the complete question is : If it now today, then iwill wear my glove. If i weaar my glove , my finger will get itchy. So i will try to avoid wearing it.
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Lisa is a waitress at the diner in town. She earns a daily wage of $60, plus tips that are equal to 20% of the total cost of the dinners she serves. What was the total cost of the dinners she served if she earned $275 on Friday?
$1075 is the total cost of the dinners she served if she earned $275 on Friday
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that Lisa earns a daily wage of $60,
Tips that are equal to 20% of the total cost of the dinners she serves
We can write this as 60+20/100x.
The total cost of the dinners she served if she earned $275 on Friday
is given by
275=60+0.2x
Subtract 60 on both sides
275-60=0.2x
215=0.2x
Divide both sides by 0.2
215/0.2=x
1075=x
Hence, $1075 is the total cost of the dinners she served if she earned $275 on Friday
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Write equations for the horizontal and vertical lines passing through the point (6, 5).
x=8 is the equation for a vertical line passing through this place and y=7 is the equation for a horizontal line traveling through this place.
what is equation ?It is thought that a number's simplest form is represented by its smallest equivalent fraction. finding the simplest form: what to do. For shared factors, look into the numerator and denominator. Examine a fractional integer to determine if it is a prime number. An equation seems to be a statement that has nearly identical sides and an equality sign in the middle. In the general form of any equation, the degrees of all the variables are listed in descending order. The common representation of a mathematical expression is an x + b = 0. x + b y + c = 0 is the general form of a two-variable linear equation (or something similar). Identity or conditional equations are the two categories under which equations fall. An identity holds true regardless of how the variables are valued.
given
The value of x, in this case 8 for a vertical line, is constant. For whatever value of y, this will hold true. In light of this,
x=8 is the equation for a vertical line passing through this place.
The value of y, in this case 7, will also never change for a horizontal line. For whatever value of x, this will hold true. In light of this,
y=7 is the equation for a horizontal line traveling through this place.
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What is the rule of 0 1 1 2 3 5 8?
The rule of the sequence 0 1 1 2 3 5 8 is that each term is obtained by adding the previous two terms.
The sequence 0 1 1 2 3 5 8 is a famous example of the Fibonacci sequence. The Fibonacci sequence is a sequence of numbers in which each term is the sum of the two preceding terms. In this case, the first two terms of the sequence are 0 and 1, and the rest of the terms are obtained by adding the previous two terms.
It's also possible to express the rule of the Fibonacci sequence by using the formula, F(n) = F(n-1) + F(n-2) where F(n) is the nth term of the sequence.
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Katie would go to the park everyday and each day she recorded how many dogs were in the park. Day
1: there was 4 dogs, Day 2: 3 dogs, Day 3: 6 dogs, Day 4: 1 dog and Day 5: 8 dogs. Over the next 3 weeks the same amount of dogs turned up each day. How many dogs did she see over the 3 weeks?
Answer:
Katie recorded a total of 4 + 3 + 6 + 1 + 8 = 22 dogs over the first 5 days. If the same number of dogs turned up each day for the next 3 weeks, then she would have seen the same number of dogs per day for an additional 21 days (3 weeks * 7 days/week = 21 days). So in total, over the 3 weeks, she would have seen 22 dogs/day * 21 days = 462 dogs.
Step-by-step explanation:
(109.99)^2
What is the answer of this using the Identities?
Answer:
12097.8001
Step-by-step explanation:
Solve the equations. Write your solutions in the second row of the table. Then use the chart to match each number with a letter. Write the letters in the bottom row. What word is revealed?
1. Solve 2x + 1 = 7. (2 points)
2. Solve 4x + 7 = 11. (2 points)
3. Solve 2x – 3 = 7. (2 points)
4. Solve x + 3 = 4. (2 points)
5. Solve 3x – 11 = 19. (2 points)
The solutions for the following equations are:
1. 2x + 1 = 7, x = 3
2. 4x + 7 = 11, x = 1
3. 2x - 3 = 7, x = 5
4. x + 3 = 4, x = 1
5. 3x - 11 = 19, x = 10
How do you calculate the values?1. 2x + 1 = 7
2x = 7 - 1 = 6
2x = 6
divide both sides by 2
x = 6/2, x = 3
2. 4x + 7 = 11
= 4x = 11 - 7
= 4x = 4
divide both sides by 4
x = 4/4, x = 1
3. 2x - 3 = 7
= 2x = 7 + 3
= 2x = 10
divide both sides by 2
x = 10/2, x = 5
4. x + 3 = 4
= x = 4 - 3
x = 1
5. 3x - 11 = 19
3x = 19 + 11
3x = 30
divide both sides by 3
x = 30/3
x = 10
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need help its due tonight its a test
graph each equation or inequality.
2y – 4x < 8
The solution is the set of all points (x,y) that satisfy the inequality y < 2x + 4.
What is the graph of a function?
The graph of a function is a visual representation of the relationship between the input values (x-coordinates) and the output values (y-coordinates) of the function. In other words, it is a visual representation of the function's rule.
The graph of a function can take many different forms, depending on the function's rule. Linear functions, for example, will produce a straight line on the graph.
To solve the inequality 2y – 4x < 8, we can start by isolating y by adding 4x to both sides:
2y < 4x + 8
then divide both sides by 2:
y < 2x + 4
This is the solution in slope-intercept form (y = mx + b), where the slope is m = 2 and the y-intercept is b = 4.
To graph the solution, you can pick a few x-values and substitute them into the inequality to find the corresponding y-values.
You can use x = -2, x = -1, x = 0, x = 1, x = 2, for example and find the y-values for each x, y < 2* -2 + 4 = 0, y < 2* -1 + 4 = 2, y < 20 + 4 = 4, y < 21 + 4 = 6 and y < 2*2 + 4 = 8.
Then plot those points on a coordinate plane and draw the line that goes through them, and shade the half-plane that is below the line
Hence, the solution is the set of all points (x,y) that satisfy the inequality y < 2x + 4.
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Charlene's science teacher allows students to drop their lowest quiz grade. The expression below represents Charlene's adjusted
quiz average after dropping the lowest grade, where x is the total number of quizzes Charlene took in science this year.
92-65
z-1
Which of the following is the best interpretation of the numerator in the given expression?
O A. The numerator represents the sum of the grades from Charlene's quizzes that were not dropped.
B. The numerator represents the difference between Charlene's quiz average and her lowest quiz grade.
OC. The numerator represents the difference between Charlene's original and adjusted quiz averages.
OD. The numerator represents Charlene's quiz average before dropping the lowest grade.
The expression that is the best interpretation of the numerator in the given expression is option B. The numerator represents the difference between Charlene's quiz average and her lowest quiz grade.
What is a numerator?A numerator is the top part of a fraction that represents the quantity being divided. For example, in the fraction 3/4, 3 is the numerator and 4 is the denominator. The numerator represents the number of parts being considered out of the total number represented by the denominator.
Therefore, the expression that expresses the interpretation of the numerator in the given expression is option B.
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The ratio of tamotoes to green pepper in a salad is 20/24 write a equivalent ratio where the number of tomatoes is the least possible whole number of green peppers is also a whole number
48. What is TRUE about permanent life insurance?
There is no value to the insurance above the death benefits.
The cash value of the insurance remains fixed.
It only covers a specific period of time.
The cash value of the insurance increases as the premiums accumulate.
Insurance is worth nothing more than a death benefit. Choice A is the correct choice.
What is insurance?Insurance is a form of protection against financial loss in which one party agrees to compensate the other party for a fee in the event of certain loss, damage, or injury. It is a type of risk management designed primarily to mitigate the risk of potential or uncertain losses. Capital life insurance is a generic term for capital life insurance.
Whole life insurance and universal life insurance are the two main types of whole life insurance, and most whole life policies combine a death benefit and a savings portion. Life insurance can cover the life of the insured and increase their savings by a guaranteed percentage. Similar to term life insurance, universal life insurance includes death benefits and savings, but with different premium structures and returns depending on market dynamics.To learn more about Permanent life insurance refer to:
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Decide whether the following situation is linear, exponential or neither.
A manager of a store receives a 5% raise every year.
Answer: I believe the answer is linear.
Step-by-step explanation:
To answer, this we'll have to look up the definition. Linear in math means "a straight line." However, exponential means it has curves in it. And if the manager gets a 5% salary every year, keyword every, it means he gets the same amount each year, making that a straight line in a graph.
If the measure of arc CE is 9x+5 degrees the measure of arc ED is 4x+1 degrees and the measure of arc CD Is 101 degrees what is the value of x? Round your answer to the nearest hundred
From the given Circle, the value of x = 19.46.
A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle.
A straight angle is 90° since a circle has 360 equal degrees. We'll just take into account angles between 0° and 360° for the time being; however, we'll take into account angles higher than 360° and negative angles later, in the section on trigonometric functions.
Given,
the measure of arc CE = 9x + 5
measure of the arc ED = 4x + 1
measure of the arc CD = 101
Total measure of the circle is = 360
⇒ 9x + 5 + 4x + 1 + 101 = 360
⇒ 13x + 107 = 360
⇒ 13x = 360 - 107
⇒ 13x = 253
⇒ x = 19.46
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Evaluate 3a-c if a=-10 and c=2
Answer:
Okay, so if a = -10 and c=2 then the equation will now be translated to:
3(-10) - 2
We can solve this by multiplying 3 by -10 and then subtracting you answer by 2.
3 time -10 = -30
-30 - 2 = -32
Step-by-step explanation:
Hope it helps! =D
Kelly is flying a kite to which the angle of elevation is 70 degrees. The string of the kite is 65 meters long. How far is the kite above the ground?
Kite is 61.08 meters far from the ground.
What is angle of elevation?The angle of elevation in math is "the angle formed between the horizontal line and the line of sight when an observer looks upwards is known as an angle of elevation". It is always at a height that is greater than the height of the observer.
Given,
Angle of elevation = 70°
Length of string = 65 meters
Distance between kite and ground = AC = ?
By the figure
Sin70° = AC/AB
0.9397 = AC/65
AC = 65×0.9397
AC = 61.0805 meters
Distance between kite and ground = 61.08 meters
Hence, ground and kite are 61.08 meters away from each other.
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Jacob and his children went into a grocery store where they sell apples for $1 each
and peaches for $0.50 each. Jacob has $8.50 to spend and must buy at least 10
apples and peaches altogether. Also, he must buy no more than 8 peaches. If a
represents the number of apples purchased and y represents the number of peaches
purchased, write and solve a system of inequalities graphically and determine one
possible solution.
Based on the graph, a possible solution for the system of inequalities is 2.75 and 1.
The number of apples purchased is equal to 5 apples.The number of peaches purchased is equal to 6 peaches.How to write and solve the system of inequalities graphically?In order to write a system of linear inequalities to describe this situation, we would assign variables to the number of apples purchased and number of peaches purchased, and then translate the word problem into algebraic equation as follows:
Let the variable a represent the number of apples purchased.Let the variable y represent the number of peaches purchased.Since Jacob and his children went into a grocery store where they sell apples to purchase at least 10 apples and peaches altogether, the three (3) linear inequalities that are required to model this situation include the following:
x + y ≥ 10
x + 0.5y ≤ 8.5
y ≤ 8
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What are the 4 rules for multiplying integers?
A negative number is created by multiplying a positive number by a negative number. A negative number is created by multiplying a negative number by a positive number. A positive number is created by multiplying two negative numbers. Any integer divided by zero results in zero.
What is an integer ?All whole numbers and negative numbers are considered integers.
This means that if we combine negative numbers with whole numbers, a collection of integers results.
An integer, which can comprise both positive and negative integers, including zero, is a number without a decimal or fractional portion. Integers include things like -5, 0, 1, 5, 8, 97, and 3,043. Z is a representation of a collection of integers.
A straight line of numbers is shown visually as a number line.
This line is used to compare integers that are spaced equally apart on an infinite line that extends horizontally on both sides.
The collection of integers can be shown on a number line much like other sets of numbers.
Hence, A negative number is created by multiplying a positive number by a negative number. A negative number is created by multiplying a negative number by a positive number. A positive number is created by multiplying two negative numbers. Any integer divided by zero results in zero.
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choices for #1
dividing figure into a square and a triangle
dividing figure into a rectangle and a triangle
dividing figure into two triangles
choices for #2
the total area of the figure is 98.2 square units
the total area of the figure is 80.0 square units
the total area of the figure is 105.0 square units
round to the nearest tenths.
Therefore ,the area of the rectangle will be A = 121 cm square after answering the offered question.
Rectangle: What is it?In Euclidean plane geometry, a rectangle is a polygon with four right angles. It might also be explained as follows: an equiangular quadrilateral is one in which all of its degrees are equal. Another possibility for the parallelogram is a straight angle. Four of the sides of a square are of identical length. Four 90 ° apex and equal adjacent sides make up a rectangle-shaped quadrilateral. This leads to the term "equirectangular rectangle" occasionally being used to describe it. A rectangle is also referred to as a parallelogram due to the equal and parallel lengths of its opposite sides.
Here,
Given : we have been given,
B is 11 cm long and L is 11 cm.
A = L X B = 11 X 11 = 121 cm sq, thus.
Therefore ,the area of the rectangles will be A = 121 cm square after answering the offered question.
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