Cannot be answered with only these measurements. You need to specify what shape the pool is. Also, for a rectangular pool, the length, width and depth are needed. For a round pool, the diameter and depth are needed.
If you fill it with 4 feet of water (48 inches), the pool will contain about 5,310 gallons of water.
A 12-foot round pool with 33-inches of water contains 2,336.4 gallons of water.
21 inches of water in a round pool that is 27 feet 3 inches across is about 7,667 gallons.
17,204 gallons.
About 15,293 gallons.
148.7 gallons.
If you fill it with 4 feet of water (48 inches), the pool will contain about 5,310 gallons of water.
A 12-foot round pool with 33-inches of water contains 2,336.4 gallons of water.
21 inches of water in a round pool that is 27 feet 3 inches across is about 7,667 gallons.
Is the pool a circle? Do you want US gallons, or Imperial gallons?
17,204 gallons.
About 15,293 gallons.
About 7,600 gallons
About 17,204 gallons.
50,000 gallons
Assuming that 24' is the diameter of the pool, then the volume of the pool is 3,387,491.39 cubic inches. There are 231 cubic inches in a gallon, so the pool holds 14,664.46 gallons of water.
489.76 gallons of water.