One angle of a triangle measures 80°. The other two angles are in a ratio of 6:19. What are the measures of those two angles?

False. The equation [tex]x = x2u + x3v[/tex] describes a line through the origin, not a plane.

The equation [tex]x = x2u + x3v[/tex] describes a line through the origin, not a plane. This equation can be written as [tex]x = x2u + x3v[/tex], which is the same as [tex]ux2 + vx3 - x = 0[/tex]. This equation is in the form of [tex]ax + by + cz = d[/tex], with a = u, b = v, c = -1, and d = 0. Since the coefficients of [tex]x2, x3[/tex], and x are all non-zero, we can conclude that this equation describes a line, not a plane. To confirm, we can calculate the direction vector for the line. The direction vector is (u, v, -1), which is a single vector and not two or more vectors that would be necessary to describe a plane.

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Invertible matrices P = [1 -2; 0 1] and Q = [1 0; 2 1] such that

A = PQ =  [1 2; 2 -3]  is non-invertible.

To find invertible matrices such that a given matrix is non-invertible, we can use the fact that if A is non-invertible, then the system of linear equations Ax = 0 has a non-trivial solution. This means that there exists a non-zero vector x such that Ax = 0.

Let's start with a non-invertible matrix A, for example:

A = [1 2; 2 4]

The determinant of A is 0, which means that A is non-invertible.

To find a non-zero vector x such that Ax = 0,

We can solve the system of linear equations:

x + 2y = 0

2x + 4y = 0

This system is equivalent to the single equation:

x + 2y = 0

If we choose y = 1, then x = -2, and we get the non-zero vector:

x = [-2; 1]

Now we can use x to construct invertible matrices P and Q such that

PQ = A, as follows:

P = [1 -2; 0 1]

Q = [1 0; 2 1]

The inverse of P is:

P^-1 = [1 2; 0 1]

And the inverse of Q is:

Q^-1 = [1 0; -2 1]

We can verify that P and Q are invertible and that PQ = A:

PQ = [1 -2; 0 1][1 0; 2 1]

PQ = [1 -2; 2 -4 + 1]

PQ = [1 2; 2 -3] = A

Therefore, we have found invertible matrices P and Q such that A = PQ is non-invertible.

Note:- that neither P nor Q is a diagonal matrix, and they are not scalar multiples of each other.

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The complete question may be:

Find non-invertible matrices A, B such that A+B is invertible. Choose

A, B, so that (1) neither is a diagonal matrix and (2) A, B are not scalar multiples of each other.

The integral for the volume of the solid is ∫2π(eᵇ)(dy)

In calculus, finding the volume of a solid is an important concept. One method to do this is by using integration.

To find the volume of the solid obtained by rotating the region bounded by y=ln(x), y=0, and x=5 about the y-axis, we can use the method of cylindrical shells. This involves dividing the region into infinitely thin vertical strips and rotating each strip around the y-axis to create cylindrical shells.

To set up the integral, we can use the formula for the volume of a cylindrical shell, which is 2πrhΔx, where r is the distance from the y-axis to the edge of the strip, h is the height of the strip, and Δx is the thickness of the strip.

Since we are rotating around the y-axis, we need to express the curves in terms of y instead of x. Using the inverse of the natural logarithm function, we can rewrite

=> y=ln(x) as x=eᵇ.

Thus, the region is bounded by x=5, y=0, and

=> x=eᵇ.

Next, we need to find the distance from the y-axis to the edge of the strip, which is simply the x-value at a given y. This is given by r=e^y.

The height of the strip is simply Δy, the thickness of the strip. To find this, we can take the difference between two consecutive y-values. Thus, Δy=dy.

Putting it all together, the integral for the volume of the solid is:

=> ∫2π(eᵇ)(dy)

This integral represents the sum of the volumes of all the cylindrical shells that make up the solid. However, we still need to evaluate the integral to get the actual volume of the solid.

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Answer:

A)  Vertex = (-3, 4), y-intercept = (0, -5), x-intercepts = (-5, 0) and (-1, 0), axis of symmetry is x = -3

Step-by-step explanation:

The vertex of a quadratic function is the turning point. As this parabola opens downwards, the vertex is the maximum point of the graph. From inspection of the graph, the maximum point is at (-3, 4). Therefore:

The y-intercept is the point at which the curve crosses the y-axis. From inspection of the graph, the curve crosses the y-axis at y = -5. Therefore:

The x-intercepts are the points at which the curve crosses the x-axis. From inspection of the graph, the curve crosses the x-axis at x = -5 and x = -1. Therefore:

The axis of symmetry is the vertical line that passes through the vertex of the parabola so that the left and right sides of the parabola are symmetrical. So the axis of symmetry is the x-value of the vertex. Therefore:

We can use the Law of Cosines to solve for angle C:

cos C = (a^2 + b^2 - c^2) / (2ab)

where b is the length of side BC.

We know that B = 40 degrees, so we can find the measure of angle A:

A = 180 - B - C

A = 180 - 40 - C

A = 140 - C

We also know that the sum of the angles in a triangle is 180 degrees, so:

A + B + C = 180

140 - C + 40 + C = 180

180 = 180

This checks out, so we can continue with solving for angle C:

cos C = (a^2 + b^2 - c^2) / (2ab)

cos C = (7^2 + b^2 - 10^2) / (2*7b)

cos C = (49 + b^2 - 100) / (14b)

cos C = (b^2 - 51) / (14b)

We can use the Law of Sines to solve for b:

sin B / b = sin A / a

sin 40 / b = sin (140 - C) / 7

b = sin 40 * 7 / sin (140 - C)

Now we can substitute this value of b into the equation for cos C:

cos C = (b^2 - 51) / (14b)

cos C = [(sin 40 * 7 / sin (140 - C))^2 - 51] / (14 * sin 40 * 7 / sin (140 - C))

Simplifying this equation and solving for cos C, we get:

cos C = 11/14

Therefore, angle C is:

C = cos^-1(11/14)

C ≈ 38.8 degrees

Answer:

259

Step-by-step explanation:

Answer:259

Step-by-step explanation:

202+57=259

Therefore, 4 people have been to Europe but not Asia.

A Venn diagram is a visual representation of sets and their relationships. It is used to show the similarities and differences between different sets of data. A Venn diagram consists of overlapping circles or other shapes, each representing a set. The size of each circle is proportional to the number of elements in the set it represents. The overlapping parts of the circles represent the elements that are shared by two or more sets. The non-overlapping parts represent the elements that are unique to each set. By analyzing the intersections and differences between sets in a Venn diagram, we can gain insights into the relationships between them. Venn diagrams are often used in mathematics, logic, statistics, and other fields to represent complex relationships between sets of data. They are also used in education to teach critical thinking and problem-solving skills.

Here,

Let E be the set of people who have been to Europe, A be the set of people who have been to Asia, and N be the set of people who have been to neither.

From the problem, we know that:

|E| = 5 (5 people have been to Europe)

|A| = 3 (3 people have been to Asia)

|E ∩ A| = 1 (1 person has been to both Europe and Asia)

To find the number of people who have been to Europe but not Asia, we need to find |E \ A|. We can use the formula:

|E \ A| = |E| - |E ∩ A|

Substituting the values we know:

|E \ A| = 5 - 1 = 4

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The Distance from the point P(2, 1, 4) to the plane is approximately -0.9487.

The equation of a plane can be found using the normal vector and a point on the plane.

First, we can find the normal vector of the plane by finding the cross product of two vectors connecting the points on the plane.

The vector from point Q to R is (0, 2, 0) - (1, 0, 0) = (-1, 2, 0)

The vector from point Q to S is (0, 0, 3) - (1, 0, 0) = (-1, 0, 3)

The normal vector is the cross product of these two vectors:

n = cross(-1, 2, 0), (-1, 0, 3)) = (3, 3, -2)

Next, we can find the equation of the plane using the normal vector and a point on the plane, say Q(1, 0, 0):

ax + by + cz = d

3x + 3y - 2z = d

3x + 3y - 2z = 3(1) + 3(0) - 2(0) = 3

Finally, we can find the distance from the point P(2, 1, 4) to the plane by finding the perpendicular distance between the point and the plane. This can be done using the formula:

[tex]d = (Ax + By + Cz + D)/\sqrt{ {A^2 + B^2 + C^2}[/tex]

[tex]d = (3x + 3y - 2z + 3)/\sqrt{ (3^2 + 3^2 + (-2)^2)[/tex]

[tex]d = (3(2) + 3(1) - 2(4) + 3)/\sqrt{ (3^2 + 3^2 + (-2)^2)[/tex]

[tex]d = (-3)/\sqrt{(18)[/tex]

d = -3/3.162 = -0.9487

So the distance from the point P(2, 1, 4) to the plane is approximately -0.9487.

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The system of equations to represent the situation are f + l = 20.5 and 6.25f + 9.5l = 149.25, solution is 14 pounds and 6.5 pounds

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

We are given that;

Cost of fish=$6.25

Cost of lobster=$9.50

Cost of 20.5 pounds =$149.25

Now, let's use the variables f and l to represent the pounds of fish and lobster sold, respectively. We can set up two equations based on the information given:

f + l = 20.5 (the total weight sold is 20.5 pounds)

6.25f + 9.5l = 149.25 (the total revenue made is $149.25)

Now we can solve the system of equations using any method we prefer. Here's one way to do it using substitution:

f + l = 20.5 (equation 1)

f = 20.5 - l (solve equation 1 for f)

6.25f + 9.5l = 149.25 (equation 2)

6.25(20.5 - l) + 9.5l = 149.25 (substitute f = 20.5 - l into equation 2)

128.13 - 6.25l + 9.5l = 149.25 (distribute the 6.25)

3.25l = 21.12 (combine like terms)

l = 6.5 (divide both sides by 3.25)

Now we can use this value of l to find f:

f + 6.5 = 20.5 (from equation 1)

f = 14 (subtract 6.5 from both sides)

Therefore, by the equations the fish market sold 14 pounds of fish and 6.5 pounds of lobster.

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Using Pythagorean theorem, the distance from where she started is 16.4km

The Pythagorean Theorem is a mathematical concept that states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. In mathematical terms, the theorem can be expressed as:

c^2 = a^2 + b^2,

where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

c² = 10² + 13²

c² = 269

c = √269

c = 16.4 km

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Answer: C

asdfasdasdasdfasdf

The appropriate method for the biologist to use for inference to the population is A) A one-sample t-interval for a population mean.

In this situation, the biologist wants to estimate the average weight of a population of dolphins living in a certain region of the ocean. The biologist will collect a random sample of dolphins and use the sample weights to create the estimate.

here, we have,

Therefore, the appropriate method for inference to the population is to use a one-sample t-interval for a population mean.

This method is used when we want to estimate the population mean using a sample mean and the standard deviation of the sample.

The t-interval takes into account the uncertainty of the estimate due to the random sampling process, which makes it an appropriate method for this situation.

Hence, The appropriate method for the biologist to use for inference to the population is A) A one-sample t-interval for a population mean.

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The correct question is:

A marine biologist wants to estimate the average weight of a population of dolphins living in a certain region of the ocean. The biologist will collect a random sample of dolphins and use the sample weights to create the estimate Which of the following is an appropriate method for the biologist to use for inference to the population?

A A one-sample t-interval for a population mean

B A one-sample t-interval for a sample mean

C A one-sample 2-interval for a population proportion

D A matched-pairs t-interval for a mean difference

E A two-sample t-interval for a difference between means

The required scaled copy of polygon B using a scale factor of 0.75 as shown.

Scale image is defined as a ratio that represents the relationship between the shape and size of a figure and the corresponding dimensions of the actual figure or object.

The polygon B is given as shown, which dimensions are below:

Length of polygon = 8 units

Height of polygon = 10 units

Here, the scale factor = 0.75

So, the dimensions of the scaled copy of polygon B are below:

Length of polygon B' = 8 × 0.75 = 6 units

Height of polygon B' = 10 × 0.75 = 7.5 units

Thus, the scaled copy of polygon B using a scale factor of 0.75 as shown.

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The number of parent chaperones required on the trip (p) variable is the dependent variable.

According to the question,

s = the number of band students on the trip

p = the number of parent chaperones required on the trip

As the question already said the number of students on the trip determines how many parent chaperones are required to go along, therefore s , the variable of number of student is a independent variable as it does not depends on another variable.

And 'p' ,  the number of parent chaperones required on the trip depend on number of students. Therefore 'p' is dependent variable.

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Box plot is a chart that shows data from a five-number summary including one of the measures of central tendency.

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

A box plot, also known as a box and whisker plot, is a graphical representation of a set of numerical data that displays its distribution, central tendency, and variability.

The box plot consists of a rectangular box with whiskers that extend from the edges of the box.

The box represents the middle 50% of the data, and the vertical line inside the box represents the median (50th percentile) of the data.

The whiskers extend to the smallest and largest observations that are within 1.5 times the interquartile range (IQR) of the lower and upper quartiles, respectively.

Any observations that fall outside the whiskers are considered outliers and are plotted as individual points.

Box plots are useful for comparing the distribution of data between different groups of data.

Hence, Boxplot is a graphical representation of a set of numerical data that displays its distribution, central tendency, and variability.

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The distance between the ships is increasing at a rate of approximately 91.6 km/h at 4:00 PM.

From the question, we have the following parameters that can be used in our computation:

Distance, D = 150 km

Rates = 35 km/h and 30 km/h

Let t be the time elapsed from noon to 4:00 PM

So, we have

t = 4

The distance between the ships to their distances is represented as

d^2 = (D + rate 1 * t)^2 + (rate 2 * t)^2

So, we have

d^2 = (150 + 35t)^2 + (30t)^2

d^2 = (150)^2 + 10500t + 1225t^2 + 900t^2

Differentiate with respect to time (t)

2D d' = 10500 + 2450t + 1800t

So, we have

D d' = 5250 + 1225t + 900t

Substitute 4 for t

D d' = 13750

So, we have

d' = 13750/D

This gives

d' = 13750/150

d' = 91.6

So the distance between the ships is increasing at a rate of approximately 91.6 km/h at 4:00 PM.

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Answer:

  $6400.42

Step-by-step explanation:

You want the value after 10 years of $5000.00 invested at 2.5%, compounded annually.

The formula for an amount earning compound interest is ...

  A = P(1 +r/n)^(nt)

where P is the amount invested at annual rate r compounded n times per year for t years.

Here, we have P=$5000, r=0.025, n=1, t=10, and the amount is ...

  A = $5000(1 +0.025)^(1·10) ≈ $6400.42

The final value after 10 years is $6400.42.

The domain of the function is [0, 3) and the range of the function is [-4, 5).

A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.

Here the input values in set A is called the domain and the output values in set B is called the range.

Given is a graph of a function.

The input values or domain includes the value of x which forms the curve in the graph.

The output values or range consists of the values of y formed as a result of the input of x.

Look at the x values corresponding to the end points of curve.

The curve extends from x = 0 to x = 3.

But at x = 3, it is an open circle. So x = 3 is not included.

So the input values are from x = 0 to x = 3, where 3 is not included.

Domain in interval notation = [0, 3).

Similarly the values of y extends from y = -4 to y = 5, where 5 is not included, since there is an open circle there.

Range in interval notation = [-4, 5).

Hence the domain and range are [0, 3) and [-4, 5) respectively.

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With the sum of digits of a two-digit number is 9. If the digits are reversed, the number is increased by 63. The number is 18. So, the correct option is A.

Let the two-digit number be represented by 10x + y, where x is the tens digit and y is the ones digit. We are told that x + y = 9 and that if the digits are reversed, the number is increased by 63.

If we reverse the digits of the original number, we get 10y + x. The difference between this number and the original number is 63, so we can set up the equation:

10y + x - (10x + y) = 63

Simplifying this equation, we get:

9y - 9x = 63

Dividing both sides by 9, we get:

y - x = 7

Now we have two equations: x + y = 9 and y - x = 7. We can solve this system of equations by adding the two equations:

2y = 16

y = 8

Substituting y = 8 into x + y = 9, we get:

x + 8 = 9

x = 1

Therefore, the original number is 10x + y = 10(1) + 8 = 18. So the answer is (a) 18.

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The correct answer is A, as the mean cost of all 12 trips can be calculated by adding up the total cost of all the trips and dividing by the total number of trips.

The proposed solution is wrong as the mean cost of all 12 trips cannot be calculated by taking the average of the means of the two employees. Taking the average of the means of the two employees assumes that they took the same number of trips and that their trip costs are equally weighted in the total cost calculation, which is not necessarily true.

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Answer:8

Step-by-step explanation:

15/15=1

112/15=7.466...

you can't buy 7.466... cups, so you round up to 8.

hope I'm right ;)

Answer:m=2/5

Step-by-step explanation:

m[tex]\neq[/tex]0

5/6=1/3m

15m=6

m=2/5, m[tex]\neq[/tex]0

The polynomial H(x) = x³ - 4x³ + 5x² - 2 divided by (x - 1), will give a quotient of x² - 3x + 2 and a remainder of 0 using the long division, we can write H(x) = (x -1)(x² - 3x + 2).

A polynomial is a mathematical expression which have a sum of powers in one or more variables with coefficients. The highest power of the variable in a polynomial is called its degree.

We shall divide the polynomial x³ - 4x³ + 5x² - 2 by x - 1 as follows;

x³ divided by x equals x²

x - 1 multiplied by x² equals x³ - x²

subtract x³ - x² from x³ - 4x³ + 5x² - 2 will result to -3x² + 5x - 2

-3x² divided by x equals -3x

x - 1 multiplied by -3x equals -3x² + 3x

subtract -3x² + 3x from x³ - 4x³ + 5x² - 2 will result to 2x - 2

2 divided by x equals 2

x - 1 multiplied by 2 equals 2x - 2

subtract 2x - 2 from 2x - 2 will result to a remainder 0

Therefore, the polynomial H(x) = x³ - 4x³ + 5x² - 2 divided by (x - 1), will give a quotient of x² - 3x + 2 and a remainder of 0 using the long division, we can write H(x) = (x -1)(x² - 3x + 2).

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The value of x is 9.

The value of y is 5.

An equation contains one or more terms with variables connected by an equal sign.

Example:

2x + 4y = 9 is an equation.

2x = 8 is an equation.

We have,

4x - 2y = 26

This can be written as,

4x - 26 = 2y ______(1)

5x – 2y = 35

This can be written as,

5x - 35 = 2y _______(2)

From (1) and (2),

4x - 26 = 5x - 35

35 - 26 = 5x - 4x

9 = x

x = 9

And,

Substituting x = 9 in (1),

4x - 26 = 2y

4 x 9 - 26 = 2y

36 - 26 = 2y

2y = 10

y = 5

Thus,

The solution is (9, 5).

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Answer:

Step-by-step explanation:

it is 77.6

Answer:

24.5in

Step-by-step explanation:

7 days in a week. 7 weeks. 7 x 7=49

49 x 0.5 + 24.5in

Answer:

Step-by-step explanation:

The zeros of a polynomial function are the values of x for which the function equals zero. For the given polynomial function p(x) = (2x - 1)(5x + 7)(8x + 9), the zeros can be found by setting each factor equal to zero and solving for x:

2x - 1 = 0, x = 1/2

5x + 7 = 0, x = -7/5

8x + 9 = 0, x = -9/8

Therefore, the zeros of the function are x = 1/2, x = -7/5, and x = -9/8.

In standard form, the polynomial function p(x) can be written as:

p(x) = 80x^3 + 122x^2 - 127x - 63

The relationship between the zeros of p(x) and its coefficients can be seen in Vieta's formulas. Vieta's formulas state that for a polynomial function of degree n with roots r1, r2, ..., rn, the coefficients of the polynomial can be expressed as:

a0 = (-1)^n * p0

a1 = (-1)^(n-1) * p1 / p0

a2 = (-1)^(n-2) * p2 / p0

...

an-1 = (-1) * pn-1 / p0

an = pn / p0

where p0 is the coefficient of the highest degree term (the leading coefficient), and the pi are the elementary symmetric polynomials, which are given by:

p1 = r1 + r2 + ... + rn

p2 = r1r2 + r1r3 + ... + rn-1rn

...

pn-1 = r1r2...rn-1 + r1r2...rn-2 + ... + rn-2rn-1

pn = r1r2...rn

Using Vieta's formulas, we can see that for the polynomial function p(x) given above, the coefficients are related to the zeros as follows:

a0 = -63

a1 = -127

a2 = 122

a3 = 80

And we can also see that:

a0 = (-1)^3 * p0 = -63

a1 = (-1)^(3-1) * p1 / p0 = -127

a2 = (-1)^(3-2) * p2 / p0 = 122

a3 = (-1)^(3-3) * p3 / p0 = 80

Therefore, the coefficients of the polynomial are related to the zeros through Vieta's formulas, which express the coefficients as functions of the zeros, and vice versa.

Answer:

y= 2x+12

Step-by-step explanation:

y=mx+c

y= 2x+12

(0,y) (-4,4)

2=y-4/4

8=y-4

12=y

The air inside the beach ball with a radius of 20 inches is 33493.33 cubic inches.

The capacity of a sphere is its volume. It is the area that the sphere occupies. Cubic measurements of a sphere's volume include m3, cm3, in3, etc. The sphere has a round, three-dimensional shape. Its shape is determined by three axes: the x, y, and z axes. Sports like basketball and football are all examples of spheres with volume.

The volume of the cube is given as:

V = (4/3) πr³

Substituting the value of r = 20 inches we have:

V = (4/3)π(20)³

V = (4/3)(3.14)(20)³

V = 33493.33 cubic inches.

Hence, the air inside the beach ball with a radius of 20 inches is 33493.33 cubic inches.

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The lateral surface area of a prism is the sum of the areas of all its rectangular faces.

Surface area is a two-dimensional measure that refers to the total area of a surface, such as the area of a two-dimensional shape, a three-dimensional solid, or a combination of both. It is the sum of the areas of all the faces of a solid object. It is also referred to as the area of the boundary of a three-dimensional object. It can be used to calculate the volume of an object, and is also used in other calculations like area of the base of a triangle, area of a circle, and more.

It is calculated by multiplying the perimeter of the base by the height of the prism. For example, if the base of a prism is a square with side length s and the height is h, then the lateral surface area of the prism can be calculated as 4sh. If the base of the prism is a rectangle with length l and width w, then the lateral surface area of the prism can be calculated as 2lw + 2wh.

The lateral surface area of a prism can also be calculated by adding the areas of the triangular faces. If the base of the prism is a triangle with side lengths a, b, and c, then the lateral surface area of the prism can be calculated as a + b + c.

It is important to note that the lateral surface area of a prism is different from its surface area. The surface area of a prism is the sum of the areas of its lateral faces and its two bases.

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Complete question:

How to find the lateral surface area of the prism?