# How many gallons are in a 4 foot by 12 foot by 18 foot round swimming pool?

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Multiply all the numbers to get the volume of the pool in cubic feet. Then divide by 7.5. That assumes the water is filled to a height of four feet. Some above-ground pools have 52" walls, which allow for a water height of 48", which is four feet. The dimensions stated above in the reworded question are for an oval pool, not a round one. I suspect the original question was for a round pool with an 18' diameter and a 4.5' wall. (The slash in 4 1/2 did not show up in the question.) If that is the case, then the answer is 3.14 times 81 times 4.5 divided by 7.5.
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# How many gallons of water will a swimming pool 12 foot by 24 foot hold?

A 12-ft round pool with depth of 2 ft has a capacity of 1,692.2 gallons of water.

# How many gallons of water for 18 foot round pool 4 foot deep?

7,646 US gallons.

# How many gallons of water does it take to fill an 18 foot round and 4 foot deep swimming pool?

Use this formula: Diameter x Diameter x Average Depth x 5.9 = Total Gallons

# How many gallons are there in a 12 foot round by 3 foot deep pool?

845 gallons. I come up with aprox 2500 gal. Pi x r(sq) x depth x 7.48

# How many gallons in a 18 foot round pool?

Impossible to answer without knowing how deep the pool is. When you know the depth (in feet), plug it into this equation: 18 x 18 x (depth) x 5.9 = # of gallons in the pool

# How many gallons of water is in a 24 foot round above ground swimming pool that is 4 foot deep?

\nThere are 13,536 gallons in a 24 foot diameter pool that has 4 feet of water. Not true for a pool that is 4 feet in height. This would hold less than 4 feet of water.

# How many gallons of water will fill a 12 foot by 18 foot long by 4 foot deep pool?

WolframAlpha, a new search engine gives a UK gallon of water at 0.1337 cu.ft so your pool should take 6,462 gallon to fill, give or take a cupful. Check it out!

# How many u.s. gallons are in a swimming pool 18 foot wide by 12 foot long by 4 foot high?

18 x 12 x 4 cubic feet.

# How many gallons of water are in a 12 foot round by 3 foot deep pool?

This question illustrates why the standard units of measure are silly. This problem would be much easier if you had metric measures. It would be so much easier that I am tempt

# How many gallons of water would a 12 foot by 4 foot round swimming pool hold?

A round swimming pool 12 feet across by 4 feet deep will hold 452 ft 3 which converts to 3,381 gallons

# What is the Gallons in 4 foot by 21 foot round swimming pool?

21 foot what? Radius, diameter or circimference? Presumably 4 feet deep?

5284.62 gallons

# How many gallons in a 5 foot round swimming pool?

All depends on how deep the water is. You can wet the bottom with less than 1 gallon, but it'll take more than 1 gallon to fill it 10 ft deep. If the circumference of the po

# How many gallons of water are in a 4 foot 18 inch round pool?

If that is 4 feet tall and 18 inches in diameter, it would be 16.83 gallons.

# How many gallons in a 28 foot round swimming pool 4 feet deep?

28 is the diameter of the pool and 4 is the height (depth). 1 cubic foot is approx. 7.48 gallons. A round swimming pool is a cylinder. So: pi x (28/2) 2 x 4 = 2463 cubic feet

# How many gallons of water are there in a 16 foot round and 4 foot deep above ground swimming pool?

If 16 ft = diameter, and 4 ft = height V = pi x r 2 x h = 803.84 cubic feet; 1 cubic foot = 7.5 gallons, so multiply by 7.5 = 6028.8 gallons