A wire whenbent into the form of a square encloses an area of 121 sq.cm.if the wire is bent in the form of a circle , then what would be the area?
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Area of the square = 121
s x s = 11 x 11
so, side of the square = 11 cm.
Circumference of the circle = perimeter of the square
2 x pi x r = 4 x s
2 x (22/7) x r = 4 x 11
r = (4 x 11 x 7) / 44
r = 7 cm
so, Area of the circle = pi x r x r
= (22/7) x 7 x 7
= 22 x 7
= 154 sq. cm
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