16Hit1600
Geometry and TrigonometryHardTotal edge length of a cube from its volume

Geometry and Trigonometry practice question

A cube has a volume of 64 cubic centimetres. What is the total length, in centimetres, of all 12 of its edges?

Answer: 48

The edge is ∛64 = 4, and 12 × 4 = 48.

Common wrong answers

If you answered 4
4 is one edge.
If you answered 32
32 counts 8 edges.
If you answered 96
96 is the surface area.

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