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A wire can be bent in the form of a circle of radius 56 cm. If it is bent in the form of a square, then its area will be (a) 3520 cm2 (b) 6400 cm2 (c) 7744 cm2 (d) 8800 cm2

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RD SHARMA-AREAS RELATED TO CIRCLES-All Questions
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  14. If the circumference of a circle increases form 4pi to 8pi , what ...

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