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The volume depends on the height. A one-foot deep pool six-feet in diameter would hold about 176 Imperial gallons (211 US gallons). Every extra foot high would hold the same amount again A pool two foot six inches deep would therefore hold 176 * 2.5 = 440 Imperial gallons or 211 * 2.5 = 528 US gallons.

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Measure the diameter and depth of the pool, in feet.

Gallons = 5.8752 x (diameter x diameter x depth).

That will work if the bottom of the pool is flat. If the bottom slopes,

then it's going to be a lot more complicated.

This would be about 15,611 gallons of water.

Q: How many gallons to fill a 21 ft round pool that is 6 ft in the middle?

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29,952 GALLONS

4,625.6 gallons.

5,287.7 gallons of water.

To fill it all the way to the top you'll need 18,502.4 gallons of water.

2,387 gallons

Exactly 5264.1669 gallons

You will need a maximum of 11,230 gallons of water.

To fill in this size pool you'll need 100.5 cubic yards of material. If you mean how many gallons of water to fill the pool, you'd need 20,300 gallons of water to fully fill it.

70

Three feet of water in a 12-foot round pool is about 2,550 gallons.

Twelve feet of water in a 10-foot round pool is approximately 7,080 gallons.

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