0580/11 Oct/Nov 2021, Question 13: Circumference and Area of a Circle
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 2 marks
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The question, in short
Given a circular disc with circumference 250 cm, calculate its radius.
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Solution · 2 marks
- 1Circumference = 2πr, so 2πr = 250
- 2r = 250 ÷ 2π = 39.78… ≈ 39.8 cm
Answer39.8 or 39.78 to 39.79
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