Is 0 a natural number?

No 0 is not a natrual number but it is a whole number.

Step-by-step explanation:

The formula for finding the volume of a cone is V = 1/3 x pi x r^2 x h.  Using the information given, you would have the following problem to calculate:  1/3 x 3.14 6 x 6 x 18. The volume is approximately 678.24 cubic cm or 216 pi cm^3.  You would give you answer as V = 216 pi cm^3.