Question

When filled, a particular round balloon has a diameter of 14 inches (in.).

What is the approximate volume of air needed to fill this balloon?
(Note: )

Answer 1

1436.76 in.^3

Explanation:

This question means to find the volume of a sphere with a diameter of 14 inches. The formula for the volume of a sphere is 4/3πr^3, so we need to find the radius, which is half the diameter. Half of the diameter is 7 inches, so now we can plug in our values to find the volume is about 1436.76 cubic inches.