GeometryQuestion 419 of 550

A rectangle has a perimeter of 30 cm and a length of 9 cm. What is its width?

  1. 6 cm
  2. 21 cm
  3. 12 cm
  4. 3 cm
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Correct answer: 6 cm

Half the perimeter is 15 cm. Width = 15 - 9 = 6 cm.

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Questions last reviewed: 21 October 2026