CCGPS CA 1.1.3 Example 3

A pool toy manufacturer makes a ball that has a 12-inch diameter. The company plans to make a new ball with a diameter that is 20% larger than the diameter of the original ball. By what percent will the volume of the new ball increase compared to the volume of the original ball?
  1. The radius is half the length of the diameter; therefore, a ball with a 12-inch diameter has a 6-inch radius.
  2. A 20% larger diameter ball has a diameter that is 14.4 inches.
  3. To find the volume of each ball, use the formula π.
  4. Compare the volume of the pool balls.