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0580/41 May/Jun 2025, Question 19: Arc Length

Cambridge IGCSE Mathematics 0580 · Paper 41 (Extended) · Calculator · 4 marks

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The question, in short

Using a diagram of a major sector with radius 7.5 cm and a missing minor sector angle of 126°, work out the distance around the major sector's edge.

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

Solution · 4 marks

  1. 1Major sector angle = 360 − 126 = 234°
  2. 2Arc = 234/360 × 2 × π × 7.5 = 30.63…
  3. 3Perimeter = 30.63… + 7.5 + 7.5
  4. 4= 45.63… ≈ 45.6 cm

Answer45.6 or 45.63…

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Also searched as: 0580/41/M/J/25 · 0580_s25_qp_41 · 0580 s25 41 · question 19.
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