How can I find the height of a sphere if I only know the diameter?

Question

A beach ball has a diameter of 24 inches. Find the surface area and volume of the beach ball and round to the nearest hundredth. In order to find the volume and surface area, I need to know the height.

Answer 1

Surface area =A=4πr^2

 

Radius=r=24/2=12 

 

S.A =4πr^2 =4*3.14*(12)^2

                     = 1808.64 inch square

 

Volume=V=4/3 πr^3

                   =4/3 * 3.14 * (12)^3

                    =7234.56 inch cube