Question
A rectangle has length 12.4 cm and width 8.6 cm.
Each measurement is correct to the nearest 0.1 cm.
[5 marks]
Each measurement is correct to the nearest 0.1 cm.
(a)Write down the upper bound of the length.
(b)Calculate the upper bound of the area of the rectangle.
(c)Calculate the lower bound of the perimeter of the rectangle.
This question has 3 parts. You don't have to get them all — each part you answer earns its own marks. Write them as (a) … ; (b) … , or just send the one part you worked out.
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