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0580/23 May/Jun 2021, Question 16: Calculating with Bounds

Cambridge IGCSE Mathematics 0580 · Paper 23 (Extended) · Calculator · 2 marks

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The question, in short

A regular hexagon has side length 80 mm to the nearest millimetre; find the lower bound of its perimeter.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Solution · 2 marks

  1. 1Lower bound of a side = 79.5 mm
  2. 2Perimeter = 6 × 79.5
  3. 3= 477

Answer477

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