16Hit1600
Geometry and TrigonometryHardVolume of a cube from its surface area

Geometry and Trigonometry practice question

A cube has a total surface area of 54 square centimetres. What is its volume, in cubic centimetres?

Answer: 27

6s² = 54 → s² = 9 → s = 3. Volume = 3³ = 27.

Common wrong answers

If you answered 3
3 is the edge length.
If you answered 9
9 is s², the area of one face.
If you answered 729
729 is 9³, cubing the face area.

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