Question

A wire when bent into a form of square enclose an area of 146.41cm if the wire is straightened and then bent in a form of circle, then what will be the area of circle formed.

Answer 1

Area of the square = 146.41 square cm
So, side of the square = 12.1 cm
Perimeter of the square = Circumference of cirlce = 12.1 x 4
                                                                               = 48.4 cm
So, 2πr = 48.4cm
        r = 7.7cm
Area of circle = 22/7 x 7.7 x 7.7
                      = 186.34 square cm ( Ans ) 




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