Volume of a hollow cylinder calculator
Enter the dimensions of a hollow cylinder and read off its volume and surface area. Volumes convert to litres and gallons with the unit selector.
Volume
34.557 519m³
- Surface area
- 155.508 84
- Volume of the bore
- 78.539 816
- Wall thickness
- 0.5
Show the working
- Outer radius = 3
- Inner radius = 2.5
- Length = 4
- Volume = pi * (3^2 - 2.5^2) * 4 = 34.5575
- Surface area = 2*pi*(3 + 2.5)*4 + 2*pi*(3^2 - 2.5^2) = 155.509
- Volume of the bore = pi * 2.5^2 * 4 = 78.5398
- Wall thickness = 3 - 2.5 = 0.5
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- volume of material = pi (R^2 - r^2) h
- the bore holds pi r^2 h
Switch the volume unit to litres or US gallons to read the capacity directly.
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