a piece of wire in the form of a rectangle of 8.9 cm long and 54 mm broad is reshaped and bent into the form of a circle find the radius of the circle in mm
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When the wire is reshaped to form a circle, the length of the wire will remain same.
=> Perimeter of the circle = Perimeter of the rectangle
=>2×
7
22
×radius=2(15+7)
=>radius=7cm
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