9(a) Lower Limit of Rectangle Area

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10/23/2025

Problem

The length of a rectangle is measured to be 8 cm. The width of a rectangle is measured to be 6 cm. Each measurement is correct to the nearest 1 cm. Find the lower limit of the area of the rectangle.

Solution

Hints:

35.25 cm²

Lower limits: length = 8 - 0.5 = 7.5 \\text{ cm}, width = 6 - 0.5 = 5.5 \\text{ cm}. Area = 7.5 \\times 5.5 = 41.25 \\text{ cm}^2, which is 35.25 \\text{ cm}^2 (to 3 significant figures).

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measurement

area