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Mensuration: Areas and Volumes · Question 30 of 68

Question 30

EasyOriginal question

A cube-shaped gift box has edges of 9 cm. Only its four side faces are to be covered with coloured paper. How much paper is needed?

Options for question 30

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. The four side faces make the lateral surface: 4 × edge² = 4×81=3244 \times 81 = 324 cm².

Worth noting

81 cm² is one face and 243 cm² is three. Four side faces means 4×814 \times 81.

Concept
Lateral surface area of a cube = 4a²
Typical time
40 s
Your time
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The rule this testsCubes and cuboids
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Ten questions from Mensuration: Areas and Volumes, at your own pace.

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Ten questions from Mensuration: Areas and Volumes, at your own pace.

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