Need Help....

[CarlD]

The short formula for gallons in a round pool is:

Diameter * Diameter * Height * 5.9.

Note that Diameter and Height are both in feet, and Height is the height of the water, not the pool wall.

So if you have a 4' high pool, your water is probably 3.5 to 3.75 feet high or between 6" to 3" below the rail.

The LONG formula is from your high school geometry:

Pi*R-squared*height*7.48

7.48 is the number of gallons in a cubic foot of water.

[Sumo1]

Nice job, Carl! I had to look at your byline to see that it wasn't posted by ChemGeek Happy swimming!
Hal

[waste]

Carl, where'd you find that D^2*H*5.9 ??