You need to calculate the volume of a cylinder. For a 10 feet pipe with 4 inches diameter, it can hold 0.855 cubic feet or 6.396 gallons. You can use this online calculator to calculate the volume of a cylinder at Onlineconversion.com.
Although a cylinder is theoretically not a prism, it shares many of the properties of a prism. Like prisms, you can get the volume by multiplying the area of one end of the cylinder (base) by its height.
Since the end or base of a cylinder is a circle, the area of that circle is given by the formula:
- area = π*r2
Multiplying by the height h we get:
- volume = πr2h
- π is Pi, around 3.142
- r is the radius of the circular end of the cylinder
- h is the height of the cylinder
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