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Ghella [55]
3 years ago
13

A cylinder has a radius of 40 ft and a height of 17 ft. What is the exact surface area of the cylinder?

Mathematics
2 answers:
Georgia [21]3 years ago
8 0

we know that

surface area of the cylinder=2*{area of the base}+perimeter of base*height

area of the base=pi*r²

r=40 ft

Area of base=pi*40²

Area of the base=1600*pi ft²


Perimeter of the base=2*pi*r

Perimeter of the base=2*pi*40

Perimeter of the base=80*pi ft


surface area of the cylinder=2*1600*pi+80*pi*17

surface area=4560*pi ft²


therefore

the answer is the option

4560π ft2

mylen [45]3 years ago
3 0

Answer:

It is C.)  4560π ft2

Step-by-step explanation:

Because i took the test and 1/1 point means i got it right

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Consider the standard form equation 2x-Ry=30. What value of R causes the graph to have a y-intercept of 5?
DochEvi [55]

Answer:

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Step-by-step explanation:

Given the equation of the line is 2x - Ry = 30

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Now convert the above given line to the standard form

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\frac{2x}{30}-\frac{Ry}{30} =\frac{30}{30}

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8 0
3 years ago
Select two choices that are true about the function f(x)=23x+14/x
WINSTONCH [101]

Answer:

There is an asymptote at x = 0

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Step-by-step explanation:

Given the function:

(23x+14)/x

Vertical asymptote is gotten by equating the denominator to zero

Since the denominator is x, hence the vertical asymptote is at x = 0. This shows that there is an asymptote at x = 0

Also for the horizontal asymptote, we will take the ratio of the coefficient of the variables in the numerator and denominator

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8 0
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The formula for the standard deviation of a sample is:
timofeeve [1]

Answer:

d. The variance is 9.56 and the standard deviation is 3.09.

Step-by-step explanation:

From the above question, we are given the following data set.

3, 7, 8, 8, 8, 9, 10, 10, 13, 14

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= 90/10

= 9

b) Variance

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3 years ago
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