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The length and breadth of a rectangle are 4.5 mm and 5.9 mm. Keeping the number of significant figures in mind, its area in mm^2 is ____(a) 22.55(b) 26.55(c) 26.6(d) 22This question was addressed to me during an interview.My doubt stems from Significant Figures in portion Units and Measurements of Physics – Class 11

Answer» RIGHT choice is (b) 26.55

Explanation: Area of RECTANGLE is LENGTH MULTIPLIED by breadth. The area of this rectangle is 4.5×5.9 mm^2 = 26.55 mm^2.


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