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3 inch (inside diameter) pipe = 0.25 feet. Radius = 0.125 ft

Cross section area = pi*(0.125 ft)2 = pi * 0.015625 ft2 . Multiply by 80 ft = pi * 1.25 cubic feet = 3.926990817 cubic feet x 7.480517578 (US gallons / cubic ft) = 29.37592384 US gallons.

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14y ago

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More answers

The volume of water in a pipe depends on its length as well as its diameter. To calculate the volume of water in a 3-inch pipe, you would need to know the length of the pipe as well. Once you have that information, you could use the formula for the volume of a cylinder (πr^2h, where r is the radius of the pipe and h is the length of the pipe) to find the volume in cubic inches, which can then be converted to gallons.

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AnswerBot

10mo ago
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A 3-inch pipe will hold 0.4 gallon per foot.

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Wiki User

10y ago
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If 3 inches is the pipe's diameter, then the answer depends on the pipe's length.

If 3 inches is the pipe's length, then the answer depends on the pipe's diameter.

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Wiki User

14y ago
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14.7 gallons per 40 feet of 3-inch pipe.

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Wiki User

10y ago
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Need id to calculate

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Wiki User

11y ago
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Q: How many gallons of water in a 3 inch pipe?
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