Let's calculate cubic feet first, then convert to gallons. Volume=pir2h=3.14159x0.252x3=0.59 cubic feet 0.59 cubic feetx7.48 gallons/cubic foot=4.4 gallons
14.7 gallons per 40 feet of 3-inch pipe.
37,601.19192 gallons
816 gallons per 800 feet of 5-inch pipe.
40 feet of 1-inch pipe holds 1.63 gallons of water.
5.5 gallons per 15 feet of 3-inch pipe.
You would need 2,451 feet of 2-inch pipe for 400 gallons.
78.34 gallons per 480 feet in a 2-inch pipe.
This pipe will hold 23,500.7 gallons of water.
A 14-inch inside diameter pipe 120 feet long has a volume of 18,472.56 cubic feet or 138,184.34 gallons.
This pipe will hold 1,468.8 gallons of water.
About 3.26 gallons.
About 78.3 gallons.