0580/11 Oct/Nov 2025, Question 27: Circumference and Area of a Circle
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 3 marks
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The question, in short
Find the perimeter of a semicircle with radius 8 cm, giving the answer in terms of π in simplest form.
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Solution · 3 marks
- 1Arc = 1/2 × π × 16 = 8π cm
- 2Straight edge (diameter) = 8 + 8 = 16 cm
- 3Perimeter = 8π + 16 cm
Answer8π + 16 or 8(π + 2)
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