4024/22 May/Jun 2026, Question 20: Upper and lower bounds
Cambridge O Level Mathematics 4024 · Paper 22 (Calculator) · Calculator · 3 marks
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The question, in short
A rectangle has area 69.5 m² (to the nearest 0.5 m²) and width 3.8 m (to the nearest 0.1 m). Find the upper bound of its length.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Upper bound of area = 69.5 + 0.25 = 69.75
- 2Lower bound of width = 3.8 − 0.05 = 3.75
- 3Upper bound of length = 69.75 ÷ 3.75
- 4= 18.6 m
Answer18.6
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Also searched as: 4024/22/M/J/26 · 4024_s26_qp_22 · 4024 s26 22 · question 20.
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