0580/31 May/Jun 2025, Question 21: Pythagoras' Theorem
Cambridge IGCSE Mathematics 0580 · Paper 31 (Core) · Calculator · 3 marks
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The question, in short
A right-angled triangle ABC has its right angle at B, with AB = 52.5 cm and AC = 59.5 cm. Work out the length of side BC.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1BC² = 59.5² − 52.5²
- 2= 3540.25 − 2756.25 = 784
- 3BC = √784 = 28 cm
Answer28
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