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Question

A wire is in shape of a circle of radius 10 cm, it is rebent to form a square. Find the side of the square so formed.

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Solution

Let r be the radius of the wire when it is bent in the form of circle.Now, r = 10 cmLength of wire = 2πr = 2 × 3.14 × 10 = 62.8 cmWhen the same wire is rebent in the form of square,then perimeter of square = 62.8 cmnow, 4 × side = 62.8 side = 62.84 = 15.7 cm

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