math
posted by rich on .
How do you calculate the total number cells in a human body given that a cell is 1/1,000 of an inch in diameter and the average human body is 66 inches?

If you assume the human body is similar to a cylinder, you could start with the equation below, but you are still missing the height.
d/2 = r
V = π r^2 h 
4678930222222

the answer is obviously 37.2 and anyone who wants to know should ask me!!!! aka anonymous