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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