Question

The volume of a cylinder is 540π ft3. The height is 15 ft. What is the diameter of the cylinder?

Answer 1

`V= \pi r^(2) h`
In this case, we want to solve for r. Once we have the radius we can multiply it by 2 and get the diameter.

So let's plug things in that we know:

`540= \pi r^(2) 15`

First, divide both sides by 15.

`36= \pi r^(2)`

Now, divide both sides by
`\pi` (3.14)

`11.46= r^(2)`

Now we have to take the square root of both sides to find the radius.
3.39=r

The last step is to multiply the radius by 2 to get the diameter.
2r=6.78

The diameter is 6.78

Hope this helps.

Answer 2

The answer is 12

Explanation:

I just took the test.