saifulislampharmadu wrote:

Here A and 2*B circle has same area.hence same perimeter

Perimeter of 2*B circle=twice the perimeter of B=perimeter of A

So ans is (C)

Posted from my mobile device Circle A and B have the same area i.e. same radius.

However the option B is stated as = \(2 \times(\pi r +2r)\). Twice the perimeter of semicirle B is not Equal to perimeter of circle B since there is an additional term of the diameter in the perimeter.

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Sandy

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