0580/31 May/Jun 2026, Question 26: Pythagoras' Theorem
Cambridge IGCSE Mathematics 0580 · Paper 31 (Core) · Calculator · 2 marks
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The question, in short
Using the two shorter sides of a right-angled triangle, 11 cm and 18 cm, work out the length of the hypotenuse labelled x.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1x² = 11² + 18²
- 2x² = 121 + 324 = 445
- 3x = √445 = 21.1
Answer21.1 or 21.09… to 21.10
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