Question

a cylinder has a height of 19 feet. the volume is 3,818.24 cubic feet. what is the radius of the cylinder? use ​π ≈ 3.14

Answer 1

32sq ft. your equation would be 19 x 3.14r2=3,818.24

Answer 2

The radius is 32 cubic feet

Explanation:

The formula to find the volume of a cylinder is V=Bh or V=πr2h. So you would need to work backwards because you already have the volume and height.

3,818.24= 3.14r2*19

3,818.24= 3.14r*38

Because of the associative property you can multiply 3.14 by 38

which is 119.32

So the next expression would be

3,818.24= 119.32r

How do you reverse multiplication? You need to devide both sides. In this case, you need to divide 3,818.24 by 119.32.

To get 32=r