GeometryQuestion 437 of 550

What is the length of the space diagonal of a cube with an edge of 2 cm?

  1. 4 cm
  2. 6 cm
  3. 2√3 cm
  4. 2√2 cm
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Correct answer: 2√3 cm

The space diagonal = edge × √3 = 2√3 cm.

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Questions last reviewed: 21 October 2026