Assume the "3 inch" is the pipe's inside diameter.
Capacity = (pi x R2 x L) = (pi x 1.52 x 120) cubic inches.
1 gallon = 231 cubic inches.
Gallons capacity = (pi x 2.25 x 120 / 231) = 3.672 gallons (rounded)
That's the capacity of the pipe. We have no way of knowing how much water is in it.
We only know that it's no more than 3.672 gallons.
A 3-inch pipe has a diameter of 3 inches, which corresponds to a radius of 1.5 inches (3 divided by 2). The volume of water that can fit in the pipe can be calculated using the formula for the volume of a cylinder: V = πr^2h, where r is the radius and h is the height. Converting the measurements to consistent units (inches), the volume of water in the pipe would be approximately 1.321 gallons.
This pipe will hold 1,468.8 gallons of water.
To convert feet of water line to gallons, you need the volume of the water line. The volume of a 2-inch diameter water line is about 0.0107 gallons per foot. So, 1000 feet of 2-inch water line would be approximately 10.7 gallons.
A 2.5 inch fire hose has a capacity of approximately 60 gallons per 100 ft. Therefore, a 50 ft hose would hold around 30 gallons of water.
A 1.5 inch (diameter) pipe that is 10 feet long can hold approximately 3.32 gallons of water. This calculation is based on the volume of a cylindrical pipe.
The pool holds approximately 10,560 gallons of water.
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
14.7 gallons of water.
111 gallons of water.
12,239.9 gallons of water per 3,000 feet.
5.5 gallons per 15 feet of 3-inch pipe.
1.6 gallons of water.
Up to 1,795.2 gallons of water.
6.5 US gallons of water.
65.3 gallons or 8.7 cubic feet.
40.8 gallons of water per 10 feet of length.
This pipe will hold 1,468.8 gallons of water.
45.9 US gallons.