A steel wire when bent in the form of a square encloses an area of 121cm.if the same wire is bent in the form a circle,then the circumference of the circle is ?

Asked by shouvik dutta | 29th Dec, 2013, 08:57: PM

Expert Answer:

Area of square = 121 cm2
So, side of square = 11 cm
 
And perimeter of the square = 4 x 11 cm = 44 cm
Thus, the length of the wire is 44 cm.
Now, the wire is bent to form a circle. 
Circumeference of the circle = 44 cm
2 ∏ r = 44
r = 44 x 7 / 2 x 22 = 7 cm
Thus, radius of the circle is 7 cm and its circumference is 44 cm.

Answered by  | 29th Dec, 2013, 09:37: PM

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