Question

A ball is made of a plastic sphere covered with a layer of rubber. The plastic sphere has a radius of 18 in., and the ball itself has a radius of 22 in.

What is the volume of the rubber layer? Use 3.14 to approximate pi and round the answer to two decimal places.

___ in3

Answer 1

plastic sphere volume=4/3 times pi times rasius^3
4/3 times 3.14 times 18^3=24416.6

rubber ball whole=4/3 times 3.14 times 22^3=44579.6

subtract
44579.6-24416.6=20163


the answer is 20163 in^3