the outer radius of a metallic sphere is 6 cm and inner radius is 3cm. find the volume

Question

Volume of sphere 4divide by 3 pi r cube

Answer 1

The volume of the hollow is 4/3(pi)*27 and the volume of the outer sphere is 4/3(pi)*216, so the difference is the volume of material making up the hollow sphere=4/3(pi)(216-27)=4/3(pi)*189=252(pi)=791.68cc.