To fill this pool completely with water requires 23,940 US gallons of water.
If this is a round pool 18 feet across and you fill it with 4 feet of water, it contains 7,646 gallons of water.
About 3,493.4 US gallons of water are required to fill a volume of 467 cubic feet.
615,142 gallons of water are needed to fill this cylinder.
It will take 5,104.1 gallons of water to fill this cylinder.
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.
It would require 2,937.6 US gallons of water to fill the pipe.
An 18-foot round pool with 3 feet of water contains 5,734.8 gallons of water. If you fill it to 4 feet deep it increases to 7,646 gallons of water.
If you fill it with 4 feet of water (48 inches), the pool will contain about 5,310 gallons of water.
A pool this size with an average depth of 16 feet requires 462,560 gallons of water to fill it to the top.