Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 12)
A piece of paper is measured to be 21.0 cm by 29.7 cm to the nearest millimetre. What is the upper bound of the area?
621.1675 cm²
621.2 cm²
624.2575 cm²
626.2575 cm²
Explanation
The upper bound of area is found by multiplying the upper bounds of the measurements: 21.05 cm * 29.75 cm = 626.2575 cm²
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