Question

Calculate volume of hemisphere with radius 3.2 cm

The volume, V, of a sphere with radius r is V = [4/3 pi r^3]

Answer 1

V ≈ 68.63 cm³

Explanation:

the volume (V) of a sphere is calculated as

V =
`(4)/(3)`πr³

the volume of a hemisphere is half the volume of a sphere, so

V =
`(1)/(2)` ×
`(4)/(3)` πr³ =
`(2)/(3)` πr³ , then

V =
`(2)/(3)` π × 3.2³

=
`(2)/(3)` π × 32.768

≈ 68.63 cm³ ( to 2 dec. places )