Volume of a cylinder using the following equation. 2 x pi x radius x length. Therefore the volume of a cylinder 4 feet in diameter and 20 feet in length will be: 2 x 3.141592 x 2 (radius) x 20 (length) = 251.3274 cubic feet
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A 10 foot long by 4 foot wide cylinder has volume of 126 cubic feet.
The volume is 785.4 cubic feet.
For the purpose of the question we'll treat the pipe as if it is a cylinder: Volume of a cylinder in cubic units = pi*radius2*length (if the diameter is 2 ft then the radius is 1ft) Volume = pi*12*8 = 8*pi = 25.13274123 Volume = 25 cubic feet to the nearest cubic foot
A six foot wide by 17 foot high cylinder has a volume of: 480.7 cubic feet.
Your pipe, the one that has a diameter of 2 feet and is 8 feet long, is a cylinder. The formula for finding the volume (V) of a cylinder is pi (about 3.1416) times the square of the radius (r) of the cylinder, times the height or length (l) of the cylinder. If the pipe has a 2-foot diameter, it is 2 feet in diameter or 1 foot in radius. Here's the formula: Vcylinder = pi x r2 x l = 3.1416 x (1 ft)2 x 8 ft = 3.1416 x 1 ft2 x 8 ft = 25.133 ft3 = 25.133 cubic feet