A three-inch diameter pipe one foot long holds 0.367 gallon.
7.481 gallons
2.61153 gallons.
.68 gallons.
A 6-inch pipe holds 1.47 gallons per foot of length. A 6-foot pipe holds 211.5 gallons per foot of length.
About 158.6 gallons per inch for an 18-foot diameter round pool.
106.12 US gallons per foot of 51-inch-diameter pipe.
There are 1.6293 UK gallons per foot in two inch diameter pipe. 1.6293 UK gallons converted into US gallons is 1.95671
2000 Gallons
3,231.5844
2.6112 gallons per foot
31.987 gallons per foot.