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The diameter of a circle is equal to the perimeter of a Square whose area is 3136 sq. cm. What is the circumference of the circle ?
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Explanation:
Area of the square = 3136 cm^2
∴ Side of the square = √3136= 56 cm
∴ Its perimeter = 4 × 56
= 224 cm
Now, Diameter of circle = 224 cm
∴ Circumference of circle
= π × diameter
= 22\7 × 224 = 704 cm