Question

Find the volume of the hemisphere with a radius of 7 inches. Round your answer to the nearest tenth.

Answer 1

718 cubic inches

Explanation:

The formula for a sphere is
`V=(4)/(3) \pi r^(3)`. A hemisphere is half this value. We will find the volume and then divide it in half. We substitute r=7 inches.

`V=(4)/(3) \pi r^(3)\\V=(4)/(3) \pi (7^(3))\\V=(4)/(3) \pi (343)\\V=1,436 inches^3`

We divide 1,436 by 2 for the volume of a hemisphere. V= 718 cubic inches