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To find the volume of a cylinder (in this case the pipe) we use the equation for the area of the end circle (pi*r^2) and multiply it by the length of the cylinder (h). This gives us the equation pi*r^2*h. Our radius is half the diameter (1.5 inches) and our height/length is 8 feet or 96 inches.
In our case this equates to pi*(1.5in)^2(96in)=216pi = 678.6in^3. Since there are 231 cubic inches in a gallon, there are 678.6/231 = 2.94 gallons of water in the pipe.
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Continue Learning about Math & Arithmetic
How many gallons of water in a 4 inch pipe 170 feet long?
111 gallons of water.
How many gallons of water are in a 5 inch in diameter pipe that is 45 feet long?
45.9 US gallons.
How many gallons of water are there in a 6 pipe that is 100 feet long?
146.9 gallons of water.
How many cubic feet are in a 3-inch pipe that is 10' long full of water?
This pipe can hold up to 0.5 cubic foot or 3.7 gallons of water.
How many gallons in a tank 2 feet high by 10 feet wide?
The capacity of the tank is 12.468 gallons (rounded) for each inch the tank is long.
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