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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

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Wiki User

14y ago
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Wiki User

13y ago

Cannot be answered with only these measurements. You need to specify what shape the pool is. Also, for a rectangular pool, the length, width and depth are needed. For a round pool, the diameter and depth are needed.

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Wiki User

14y ago

That all depends on the depth, and if it is deeper on one end. Sorry, you need more information to answer this correctly.

Do the math yourself when you find out how deep it is, start off with 18 * 36 * x ("x" being the depth.)

If the pool were to be 5ft deep throughout the whole pool exactly it would be 3240 Square feet of water. As for gallons, You would need to convert that number.

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Wiki User

13y ago

If the pool is 8 feet in the deep end and 3 feet in the shallow end, the total volume will be about 26,660 gallons of water.

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Wiki User

14y ago

It depends on how deep it is. But probably around 30,000 gallons

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Wiki User

14y ago

how much water is in an 18' x 36' in ground pool?

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Wiki User

12y ago

You need also to specify the depth.

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byron westbrook

Lvl 1
2y ago
3ft to 6ft
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byron westbrook

Lvl 1
2y ago
3 to 6 ft

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Wiki User

11y ago

About 21,000 Gal

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Anonymous

Lvl 1
4y ago

7.5 deep

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Anonymous

Lvl 1
3y ago

H

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Q: How much water is in a 18 foot by 36 foot pool?
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