The length of the diagonal of a square is a+b then its perimeter is

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4a+b

2a+b

22a+b

2a+b

answer is C.

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Detailed Solution

Since the length of the sides are equal, let it be xuse Pythagorean theorem, x2+x2=a+b 2x2=a+b x2=a+b2 x=12a+bThe perimeter of the square is x=22a+b

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