0580/42 May/Jun 2025, Question 12: Calculating with Bounds
Cambridge IGCSE Mathematics 0580 · Paper 42 (Extended) · Calculator · 2 marks
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The question, in short
Rectangle length 16 cm and width 14 cm, each rounded to the nearest centimetre. Find the lower bound of its perimeter.
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Solution · 2 marks
- 1Lower bounds: length 15.5 cm, width 13.5 cm
- 2Perimeter = 2 × (15.5 + 13.5) = 58 cm
Answer58
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Also searched as: 0580/42/M/J/25 · 0580_s25_qp_42 · 0580 s25 42 · question 12.
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