Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 21)
The area of a room is 21.0 cm² to 3 significant figures, the length is 17.8 cm to the nearest millimetre. To calculate the maximum value for the width, what values should be used?
21.05cm² and 17.85cm
20.95cm² and 17.85cm
21.05cm² and 17.75cm
20.95cm² and 17.75cm
Explanation
For a maximum width, you divide the minimum possible area by the maximum length.
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