A copper wire when bent in the form of a square encloses an area of 121 CM square if the same wire is bent into the form of a circle find the area of the circle.
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Step-by-step explanation:
Area of square= 121 cm^2
Each side of square= 11 cm
Perimeter of square= 11×4 cm
Circumference of circle = Perimeter of square
So,
2×22/7×r=44
=>r= 44×7/44= 7 cm
Area of circle= 22/7×7^2 cm
=154cm
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