The cirucumference of a ballon is 75 inches and the diameter is 12 inches what is the volume?

2 answers

The cirucumference of a ballon is 75 inches and the diameter is 12 inches what is the volume?
volume = 4/3 π r3

V = (4/3) * 3.14 * 6^3

V = (4/3) * 3.14 * 216

V = (4/3) * 678.24

V = ?