0580/42 May/Jun 2026, Question 21: Upper and lower bounds
Cambridge IGCSE Mathematics 0580 · Paper 42 (Extended) · Calculator · 3 marks
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The question, in short
A cuboid has volume 22 cm³ (to the nearest cm³) and mass 140 g (to the nearest 10 g). Find the lower bound of its density, using density = mass ÷ volume.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Lower bound of mass = 135 g
- 2Upper bound of volume = 22.5 cm³
- 3Lower bound of density = 135 ÷ 22.5 = 6 g/cm³
Answer6
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