18th April, 2012: How do you find the surface area and volume of a sphere?

Spheres:

A sphere is the set of all points in space equidistant from a given point called the center.

You can find the surface area of a sphere by using the formula SA= 4πr².

Example: Given radius= 14inches

               SA= 4πr²

               SA= 4π(14)²

               SA= 784π

               SA= 2,463.0inches²

You can find the volume of a sphere by using the formula V= 4/3πr³.

Example: Given radius= 12meters

               V= 4/3πr³

               V= 4/3π(12)³

               V= 7,238.2meters³