Cylinder Calculator
Volume
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Surface Area
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Lateral Area
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Cylinder Volume and Surface Area
V = pi*r^2*h. Lateral area = 2*pi*r*h (unrolled rectangle). Total SA = 2*pi*r*h + 2*pi*r^2.
Cylinders: cans, pipes, tanks, silos, pistons. Engine displacement uses cylinder volume.
For partial fill in horizontal cylinder, volume requires circular segment area times length.
Frequently Asked Questions
Volume formula?
V = pi*r^2*h. For diameter: V = pi*(d/2)^2*h.
Surface area?
Total = 2*pi*r^2 + 2*pi*r*h. Two circular ends plus curved side.
Convert to gallons/liters?
Cubic inches / 231 = US gallons. 1000 cm^3 = 1 liter. 1 m^3 = 1000 liters.
Pipe volume?
V = pi*(inner radius)^2*length. Wall volume = pi*(outer^2-inner^2)*length.