0, 21ftx4ft is a flat surface, water will just slide off
A 22-foot round pool that is 4 feet deep holds about 43,238.5 liters of water.
Around 22,870 liters of water.
About 129,715 liters.
About 45,025 liters.
About 39,397 liters.
About 49,246.3 liters of water.
About 28,944.8L
1100 gals
There are 3,634 liters (960 gallons) of water in a pool that is four feet in diameter and 8 feet deep.
Assuming the pool is circular, and that you fill the pool to the brim, the pool will contain about 2028 liters of water. However, if you want to leave 4 inches for the water to have some room to splash around, that'll cut that number down to 1859 liters.
Going to take a few steps but here goes....area of the pool = radius Squared times Pi = 16.5 X 16.5 X 3.14159 = 855.25 square ft.Volume of the pool is area X depth = 855.25 X 4.5 = 3848.625 cubic feet1 cubic foot = 28.3168466 liters3848.625 cubic feet X 28.3168446 = 108981 liters
5000 gal