If you filled it all the way to the top (40") it would hold about 2,830 gallons of water.
About 5,730 gallons.
6016 Gallons
About 7,645 gallons.
Twelve feet of water in a 10-foot round pool is approximately 7,080 gallons.
Approx 3437 Imperial gallons.
Approximately 8,146,286 gallons of water.
At 7.48 gallons per cubic foot that is 3.14x30x30/4x52 x7.48 /12 = 22,900 gallons
Approximately 15,500 Gallons. This estimate is based on a 24 round by 54" wall height giving a full 4 ft water depth. It is in my backyard right now and has been there for 4 yrs. Hope this helps.
20,500 gallons
Approximately 11,520 gallons.
To fill it all the way to the top (33") would require about 2,336 gallons of water.
That is approximately 52,119.762 US gallons of water