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.
A 12' x 24' x 52' pool can hold up to about 112,028 gallons of water.
A 12-foot round pool with 33-inches of water contains 2,336.4 gallons of water.
This pool can hold up to 1,689.7 gallons of water.
A 12-foot wide round pool with 3.3 feet of water contains 2,803.7 gallons of water.
This pool can hold up to about 2,538 gallons of water.
Not many, a average swimming pool holds approx, 12, 000 to 15,000 gallons of water.
Three feet of water in a 12-foot round pool is about 2,550 gallons.
The pool holds approximately 10,560 gallons of water.
A 2-foot round pool with 12 inches of water is holding about 23.6 gallons of water.
22.44 gallons for each inch of the water's depth.
315 gallons.
Go to http://www.havuz.org/pool-calculators.htm