There need not be any water at all in the hose! The capacity of the hose is 1.67 cubic feet.
1 Gallon
The capacity of a 25 ft hose with a diameter of 3 inches is 1.23 cubic feet. That is the maximum volume of water in the hose: there need not be any!
It depends on how fast the water is flowing. There isn't enough information to solve this.
8.15 gallons
A 100-foot hose with an inside diameter of five inches can hold 102 US gallons of water.
There need not be any water at all in the hose! The capacity of the hose is 1.67 cubic feet.
1 Gallon
1.03 gallons
A water hose is a cylinder, and since the volume of a cylinder is pi*r^2*height, we can calculate the volume of the water hose by finding the radius and height. A 3 inch hose has a radius of 1.5 inches, and 50 ft is equal to 600 inches, so 1.5^2 is 2.25, and 2.25*600 is 1,350. Finally we multiply by Pi to get approximately 4,239 cubic inches. Since 1 cubic inch is equal to 0.00432 gallons, there are 18.3506 gallons.
A two inch pipe can hold 0.1632 gallons per foot. It takes slightly over 6 feet of two inch pipe to hold one gallon of water.
The capacity of a 25 ft hose with a diameter of 3 inches is 1.23 cubic feet. That is the maximum volume of water in the hose: there need not be any!
41/2
V = pi*r2*h = pi*(1.5/2)2*(100*12) cubic inches = 2120.6 cubic inches.
109 lbs with no water
A cylinder with these dimensions will hold up to 13.06 gallons of water.
It depends on how fast the water is flowing. There isn't enough information to solve this.