Question

Wayne plans to replace the ventilating fand in the oldest greenhouse and needs to know its volume. The greenhouse is shaped of a half of a cylinder, Its diameter is 40 feet, Its length is 120 feet, using 3.14 for pi, how many cubic feet does the greenhouse enclose?​

Answer 1

628.

Explanation:

We need to calculate the radius of the cylinder :

40/2 = 20 feet

We then will calculate the volume of the whole cylinder:

`V = \pi * r^(2) * h = 3.14 * 20^(2) * 120 = 1256` cubic feet.

However, Wayne greenhouse is just a half of a cylinder, so it's volume are:

`1256 / 2 = 628` cubic feet.

I'm vietanh and have a good day!