To fill this pool to a depth of four feet you will need about 7,646 gallons of water. If you decide to fill it to three feet deep, the gallons decreases to around 5,735.

If the pool is a constant 9 feet deep the total volume would be 48,600 gallons. However, if 9 feet is only the deep end and the shallow end is 3 feet deep, the gallons changes to 32,400 gallons.

Depends on the depth. If it is 4 feet deep and it is cicular with a diameter of 24 feet then you have approx. 13,553 gallons of water. If it is 3 feet deep then you have approx. 10,152 gallons of water.

If the pool starts at 4 feet deep and ends at 6 feet deep in a constant slope along its entire length with no "shelf," then the answer is 119,150 gallons.