How many cubic feet are in a 10' circle?

Answer 1

A circle is a two dimensional shape; it's width in the third dimension can be considered as either 0 or infinite; so its volume in cubic feet is either 0 or infinite.

Or to put it another way:

cubic feet are a measure of volume which is a property of three dimensional objects.

A circle is a two dimensional shape; it has no volume property. To ask what its volume is is nonsense.

Answer 2

This cannot be calculated without knowing which dimension is the width and which one is the length of the cylinder.

Answer 3

A cylinder with an 8-inch diameter and that is 10 feet long has a volume of about 3.49 cubic feet.

Answer 4

216.66 cubic feet

Answer 5

70.7 cubic feet of volume.