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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