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Square Roots & Cube Roots · Discussion forum

Diagram-Based Questions Question 11 – answer, explanation & discussion

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Question 11 Back to Exercise

The total surface area of a cube is given below.

A cube with known surface area
?Surface area = 1,350 cm²Volume = ?

What is the volume of the cube?

  • A 225 cm³
  • B 1,350 cm³
  • C 3,375 cm³ Correct
  • D 2,250 cm³
Correct Answer: Option C

One face = 1,350 ÷ 6 = 225 cm²

Edge = √225 = 15 cm

Volume = 15³ = 3,375 cm³

Trap: 225 is the area of one face.

Answer: 3,375 cm³

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