How do you find the volume of a 5-in thick acrylic shell of a sphere that is 5ft in diameter?

Question

“The Johnson-Sea-Link (JSL) is an oceanic submersible pod. The front chamber, which contains the sub’s controls, is a 5-ft-diameter sphere made of 5-in-thick clear acrylic. Find the volume of the acrylic used for the pod’s shell.”

Can you please tell me the process to get the right answer?

Answer 1

The volume of a sphere is (4/3)πr³.

The inside radius of the shell is 5'=60".

The outside radius is 65".

The difference in volume of these 2 spheres is the volume you need.