Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 38)
The area of a room is calculated using the measurements of 5.2m by 3.69 m, correct to the nearest centimeter. What should be used to calculate the maximum floor area?
5.205 m x 3.695 m
5.2 m x 3.69 m
5.15 m x 3.685 m
5.20 m x 3.69 m
Explanation
To obtain the upper bound, both the measurements should be using their upper bounds. 5.2 + 0.005 = 5.205 & 3.69 + 0.005 = 3.695
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