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lbvjy [14]
3 years ago
12

The total surface area of a cylinder is 690.8. Its diameter is 10 inches. What is it’s height?

Mathematics
1 answer:
AysviL [449]3 years ago
7 0

Answer:

h=17\ in

Step-by-step explanation:

we know that

The total surface area of a cylinder is equal to

SA=2\pi r^{2}+2\pi rh

where

r is the radius of the base of cylinder

h is the height of cylinder

we have

SA=690.8\ in^2

r=10/2=5\ in ----> the radius is half the diameter

assume

\pi=3.14

substitute the given values and solve for h

690.8=2(3.14)(5^{2})+2(3.14)(5)h

690.8=157+31.4h

Solve for h

31.4h=690.8-157

31.4h=533.8

h=17\ in

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

Hello!

The objective of this test is to know if aerobic exercise modifies hippocampus activity. A random sample of 120 elderly men and women was taken and divided into two groups.

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Answer:

b) -18(2x -3y + 5)

d) 18(-2x + 3y - 5)

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Step-by-step explanation:

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b) -18(2x - 3y + 5) = -36x + 54y - 90 equal

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7 0
3 years ago
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-4r-8(r-6)=7(5r-1)+8
KATRIN_1 [288]

Answer:

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Step-by-step explanation:

In this question, we have to solve for the vallue of "r". We will use the distributive property shown below to ease our process.

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