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Volume of a cylinder = (pi) (radius)2 (length)

Radius = 1/2 diameter = 3 inches

Length = 12 inches

1 gallon = 231 cubic inches

Volume = (pi) (3)2 (12) = 108 pi = 339.292 cubic inches = 1.4688 gallons

That's the volume of the section of pipe. I have no way of knowing

how much water is in it. It could even be empty.

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13y ago

What else can I help you with?