Question #75eb0

1 Answer
MJ
Jan 3, 2018

96%

Explanation:

Suppose the side of square is x
Then its area = x^2

When there is 40% increment in the length of the side, the side length would become =1.4x

(40% = 40/100 = 0.4 and when 0.4x is added to initial length x, the increased or new length becomes 1.4x)

New Area of square with increased length = (1.4x)^2 = 1.96x^2

Now, percentage change in area of resultant square =

((1.96x^2-x^2)/x^2)*100 = 96%

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