It's a common mistake, but you must first find the volume of the pool. Calculate the volume of the pool by surface area X average depth. This will give you the cubic footage (approx.) in the pool. Ft3 X 7.48 (gal/ft3) will give you gallons in pool (approx.).
1 gallon = 231 cubic inches
1728 cubic inches = 1 cubic foot
(25 x 20 x 4 x 1728) / 231 = 14,961 gallons (rounded)
36701.2987 gallons is the pool is evenly 4 feet deep.
How many imperial gallons is 30 cubic feet of water?
1,987 cubic feet = 14,860 gallons of water.
There are 8,483 gallons in 1,134 cubic feet of water.
31 cubic feet of water equates to ~231.9 gallons.
44,260 gallons of water.
Four cubic feet is 29.92 gallons.
Six acre-feet of water is about 1,955,109 US gallons.
48,000 cubic feet is about 359,065 US gallons of water.
841.6 gallons
448.8 US gallons of water.
About 235 gallons of water.
1,578,943 (cubic feet) = 11,811,313.9 US gallons