Question

5. The length of a square is increased by 40% while breadth is decreased by 40%. Find the ratio of the area of
sing rectangle so formed to that of the original square.
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Answer 1

Let the side of square is a.

length of rectangle = 1.4a ; breadth of rectangle = 0.6a;

Area of rectangle = 1.4a*0.6a = 0.84a2 = = sq. units

ratio of area of rectangle to that of square = 0.84a2 : a2 = 84:100 = 21:25

Answer 2

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