Question

The two spheres above have the same center. One has a radius of 2 cm, the other has a radius of 3 cm. Approximately how much space is in between the two spheres?

Answer 1

Calculate the volume of both spheres and subtract the volume of the smallest from the volume of the biggest.

Volume of a sphere = [4/3] π (r^3)

Volume of the big sphere = [4/3]π(3cm)^3

Volume of the small sphere = [4/3]π(2cm)^3

Space in between = [4/3]π (27 - 8) cm^3 = 79.59 cm^3