What is the radius of a cone with a height of 9

Question

The cone has a height of 9. We are trying to determine the radius of the cone. 

Answer 1

First, look at the formula for Volume: V = pi•r²•h/3.  If you know two of the three  numerical values of V, r, and h, you can manipulate this formula to solve for the unknown variable (V, r or h).

 

But you only seem to know one--insufficient data.  you only hope is to find that come and measure its height!