What formulas are used?

Cube: s³. Sphere: (4/3)πr³. Cylinder: πr²h. Cone: (1/3)πr²h.

Use any consistent units. Result is in cubic units of that measure.

Online Volume Calculator

Volume of cube, sphere, cylinder, or cone. Select shape and enter dimensions.

Shape

Side

What formulas are used?: Cube: s³. Sphere: (4/3)πr³. Cylinder: πr²h. Cone: (1/3)πr²h.
What units?: Use any consistent units. Result is in cubic units of that measure.

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Calculate C(n,r) — the number of ways to choose r items from n without order. Uses n!/(r!(n-r)!).

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Count how many permutations of n objects are even (expressible as an even number of swaps). For n ≥ 2, equals n!/2.