2000 Gallons
7.5
A 12 inch diameter round pipe will hold 4.89 UK gallons or 5.88 US gallons per foot.
A lot. ;)
18 * 20 * 12 = 4320 which is the volume in cubic inches and is 18.7012987 gallons. Divide 4320 cu. in. by 231 cu. in. per gallon.
6.23377 US gallons.
One gallon.
2000 Gallons
7.5
3,231.5844
This cylinder has a volume of 3.3 US gallons or 2.75 Imperial gallons.
A 12 inch diameter round pipe will hold 4.89 UK gallons or 5.88 US gallons per foot.
A lot. ;)
18 * 20 * 12 = 4320 which is the volume in cubic inches and is 18.7012987 gallons. Divide 4320 cu. in. by 231 cu. in. per gallon.
72 gallons.
The capacity of the tubing is 94.6 Imperial gallons, or 113.6 US gallons. There need not be any water in it!
22.44 gallons for each inch of the water's depth.