mine is the same size as long as its 3 feet deep to 8 feet deep then the exactly 26730 gallons i figured that out today because we over shocked our pool by 4 times
Assuming you are referring to an 18 foot by 3 foot (36 inches) circular pool, the formula would be PIE x radius x radius x depth = cubic feet, then cubic feet x gallons per cubic foot. So here is the answer.... 3.14 x 9 x 9 x 3 = 763.02 cubic feet, then 763.02 x 7.48 (gallons per cubic foot), = 5707.39 gallons.
Diameter = total length across
Radius = half of diameter
Cubic foot = 1' x 1' x 1'
7.48 = gallons per cubic foot
There is not enough information. What is the height of the pool? The pool area is 648 square feet.
To give you an idea, a 36-foot by 18-foot by 5-foot deep pool takes about 24,000 gallons of water to fill.
It holds 702 cubic feet.
Diameter x Diamater X Depth X 5.2
To fill a round pool that is 18 feet in diameter and 5 feet deep, you would need approximately 14 cubic yards of earth.
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.
3.35 feet 18 x 18 x 3.35 x 5.9 = 6403 gallons
1,902 gallons 15,877 pounds Correct answer: 5700 gal. 18'x18'x5.9x3' check backyardpools.com
10800
4ft. by 18 ft.
10000
About 7,600 gallons