The length of a rectangular piece of sheet metal is measured with a wooden ruler to be 12 mm. The width of the rectangular piece is measured using a micrometer callipers and found to be 5.98 mm. Give your answers to the following questions to the correct number of significant numbers. (a) what is the area of the rectangle? (b) what is the difference between length and breadth?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
(a) Area = Length × Breadth = 12 mm × 5.98 mm = 71.76 mm2 = 72 mm2
(b) Difference = Length – Breadth = 12 mm – 5.98 mm = 6.02 = 6 mm
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