0580/32 Oct/Nov 2025, Question 24: Finding Missing Sides
Cambridge IGCSE Mathematics 0580 · Paper 32 (Core) · Calculator · 2 marks
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The question, in short
Triangles ABC and PQR are similar; AC = 12 cm, PQ = 42 cm, PR = 28 cm. Calculate the length AB.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1AC corresponds to PR and AB corresponds to PQ
- 2AB/42 = 12/28
- 3AB = 42 × 12 ÷ 28 = 18 cm
Answer18
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