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0580/31 May/Jun 2025, Question 17: Volume of a Prism

Cambridge IGCSE Mathematics 0580 · Paper 31 (Core) · Calculator · 3 marks

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The question, in short

Given a cylinder volume of 863.5 cm³ and height 12.3 cm, find its radius.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Solution · 3 marks

  1. 1πr² × 12.3 = 863.5
  2. 2r² = 863.5 ÷ (12.3π) = 22.346…
  3. 3r = √22.346… = 4.73 cm

Answer4.73 or 4.726 to 4.727…

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