A. An official men's basketball has a diameter of 9.55 inches. The diameter of a women's basketball is 9.23 inches. What's the difference of volumes

A. An official men's basketball has a diameter of 9.55 inches. The diameter of a women's basketball is 9.23 inches. What's the difference of volumes of both basketballs in cubic inches? Show your work.

B. A three dimensional object is created by rotating a circle about one of its diameters. What's the shape of the resulting object?