0580/12 Feb/Mar 2021, Question 21: Composite Perimeter, Area and Volume
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks
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The question, in short
Find the total area of a shape combining quarter-circle OAB of radius 5 cm and right-angled triangle OBC with OC = 6 cm.
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Solution · 3 marks
- 1Quarter-circle area = 1/4 × π × 5² = 19.63…
- 2Triangle area = 1/2 × 5 × 6 = 15
- 3Total area = 19.63… + 15 = 34.63… ≈ 34.6 cm²
Answer34.6 or 34.63 to 34.64
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