The diameter of this beach ball is 12 inches.

apply the formula for the volume of a sphere to determine how much air it can hold.

use the calculator to multiply by π.

round to the nearest hundredth.

formula: sphere v = 4 3 πr3

how much air can the beach ball hold?

volume of a sphere



Just plugin the numbers you have. For instance, r = radius. We know that the radius is 1/2 of the diameter. Our diameter is 12 so 12 / 2 = 6. With that said, add 6 to where the r is located in the formula and solve the formula.

Solve for V


To solve for V we have to do the following.



The formula above reads V(Volume of air) equals 4 divided by 3 times pi times 6 to the power of 3