Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 13)
If the length of a paper is 21.0 cm and a piece of A4 paper is 29.7 cm. Both are to the nearest millimetre. What is the upper bound of the sum of the areas?
50.6 cm
50.7 cm
50.75 cm
50.8 cm
Explanation
21.05+29.75=50.8
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