On Sun, 26 Apr 2009 10:00:38 EDT, ~ jan wrote:

3.14 x Diameter x Depth x 7.48 = gallons

Lets try this formula:
Pi times radius squared times depth = cu ft
cu ft x 7.48 = gallons

10 ft diameter 3 ft depth = 5x5x3.1416 =78.54 cu ft = 587.479 or
commonly expressed as 587 and one half gallons.

Smart people assume I know something and fail to explain in simple
terms, sometimes that just frustrates me.