Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 10)
A rectangle measures 12 cm by 5 cm, with both measurements correct to the nearest cm. What is the greatest possible perimeter?
34.0 cm
34.5 cm
35.0 cm
35.5 cm
Explanation
The upper bounds are 12.5 and 5.5. Perimeter = 2(12.5 + 5.5) = 36cm (rounded)
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