Every couple of years I seem to come up against a problem that I know must be reasonably simple to solve, but nevertheless evades my ability come up with an answer. I always feel a little stupid after you confirm my initial thought that it should be simple. I'm always greatful for your response, however, and, as a fan, to know that you are still alive and kicking. I use the opportunity to read through you site and check up on your progress.
Here's my problem:
I know that a cylinder has a volume of 25 cubic milliliters and I know that the height of the cylinder is equal to the diameter. What is the height of the cylinder?
