Question

A sphere has a radius of 7 millimeters. A second sphere has a radius of 4 millimeters. What is the difference of the volumes of the spheres?

Answer 1

Explanation:

volume V1=4/3 π(r1)³=4/3 π×7³

V2=4/3 π(r2)³=4/3 π×4³

V1-V2=4/3 π(7³-4³)=4/3π(343-64)

=4/3×π×279

=4π×93

=372π mm³