A wire in the shape of a square of side 88 cm is bent so as to form a circular ring. Find the area of the circle.

We have,length of each side of square, s = 88 cmNow, perimeter of square = 4s = 4×88 = 352 cmNow, length of wire = 352 cmWhen this wire is bent in the form of circle, thencircumference of circle = 352 cm2πr = 352    where r = radius2×227×r = 352r = 56 cmNow, area of circle = πr2 = 227×562 = 9856 cm2

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Side of square is 88cm.

 the length of wire =  the perimeter of the square = 4*88 = 352cm
Perimeter of square = circumference of circular ring
352=2*pi*r
find the value of r and then find the area of the circle.
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