Exactly 5264.1669 gallons
5,287.7 gallons of water.
If you fill it to four feet deep, the total is 10,408 gallons of water.
To fill it to the top you will need 9,558 gallons of water.
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.
You will need a maximum of 11,230 gallons of water.
Alittle under 10,000 gallons.
About 4,640 gallons.
To fill it all the way to the top you'll need 18,502.4 gallons of water.
To fill your 18-foot round pool to a depth of 48" would require about 7,646 gallons of water. If you filled it to 36", the total would decrease to about 5,735 gallons.
Twelve feet of water in a 10-foot round pool is approximately 7,080 gallons.
Three feet of water in a 12-foot round pool is about 2,550 gallons.
A pool this size with an average depth of 16 feet requires 462,560 gallons of water to fill it to the top.
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.
Approximately 4,400 gallons.
10,000 to 11,000 gal.
If it is 4 feet deep, then 13,500 gallons
That all depends on how deep the water has to be, which the question neglects to specify.
885 gallons to fill it to the very top.
Round Pool: Depth x Diameter-squared x 5.9 = Volume in Gallons
This pool can hold up to about 8,251 gallons of water.(This would fill the pool to the very top)