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14 March, 08:23

Area of square is numerically less than twice its diagonal by 2. Find its Perimeter.

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  1. 14 March, 08:31
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    2D-a^2=2

    2 (a√2) - a^2=2

    a^2-2√2*a+2=0

    2a = 2√2 + √ (8-4*2) = 2√2

    hence, perimeter = 4a = 2*2a=2*2√2 = 4√2
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