That question -- or ones nearly identical -- have been asked and answered here. Use the search tool at the upper right. Search on the following keywords: round pool 18 foot diameter Depth of the pool = 4 feet.
Circumference of the pool = 18 feet. From the circumference we can find the radius of the pool.
2(pi)(radius) = 18
(pi) radius = 9
Radius of the pool is (9/pi) feet.
Volume of the pool = (pi)(radius)2(height) = (pi)(9/pi)24
Volume of the pool = 324/pi cubic feet. Source: www.icoachmath.com
50
About 49,246.3 liters of water.
About 2,794 gallons of water.
1,770 gallons.
A 12-foot wide round pool with 3.3 feet of water contains 2,803.7 gallons of water.
'bout 1500 to 2000
A 22-foot round pool that is 4 feet deep holds about 43,238.5 liters of water.
50
"3 feet round" is not clearly defined: is that the radius, the diameter, or the circumference?
Three feet of water in a 12-foot round pool is about 2,550 gallons.
Around 30 feet
About 4,490 gallons of water.
About 49,246.3 liters of water.
About 2,794 gallons of water.
Twelve feet of water in a 10-foot round pool is approximately 7,080 gallons.
If the circumference of the round pool is 29 feet, then the volume of the pool (area times depth) is about 267.7 cubic feet.
6,200 gallons.