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7 February, 01:32

By what percentage will the area of a square increase if its side increases by 10%? (with explanation)

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  1. 7 February, 02:53
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    21%

    Step-by-step explanation:

    side of square = a

    area of square = a²

    increased side = a+10% = a*1.1 = 1.1a

    increased area = (1.1a) ² = 1.21a²

    the difference is 0.21 which is = 21%
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