Completely filled, (pi x radius squared x length in inches)/231 cu in per gallon = gallons = 13.06122449, if the inside diameter of the pipe is 2 inches.
Of course that assumes that the inside diameter is exactly 2 inches. For real pipes, the actual inside diameter of a pipe depends on the "schedule" of the pipe. For a "nominal" pipe diameter of 2 inches, the outside diameter will be 2.375 inches and the wall thickness could vary from .065 inches (schedule 5) to .343 inches (schedule 160) meaning that the actual inside diameter could vary from 2.245 inches to 1.689 inches.
A three-inch diameter pipe one foot long holds 0.367 gallon.
2.6 gallons of water.
There are about 33.7 gallons in a 3' by 1' by 1'6" aquarium.
The capacity of the tubing is 94.6 Imperial gallons, or 113.6 US gallons. There need not be any water in it!
There need not be any water in it! The capacity of such a pipe is 0.65 US gallons.
Water Volume table for 2 inch thru 48 inch pipe
94 gallons of water.
0.255 gallons per foot of pipe. A 10 ft long pipe that size holds 2.55 gallons.
There need not be any water at all in the pipe. The capacity of the pipe is approx 3.4 Imperial gallons.
.0637 gallons (capacity of pipe= 3.14159265 X radius squared X length)
10.2 gallons of water.
About 147 gallons of water.
182.8 gallons of water.
14.7 gallons of water.
123.4 gallons water.
111 gallons of water.
2.5 gallons of water.
36 cubic feet of water at 6.229 gallons/ cu ft = 224.2 gallons
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
A 4-inch pipe 100 feet long can hold up to 65.3 US gallons of water.
This pipe can hold up to 0.5 cubic foot or 3.7 gallons of water.
6.5 US gallons of water.
1.6 gallons of water.