FIND THE RADIUS OF SEMICIRCLE IF ITS PERIMETER IS 18 cm

We know that,Perimeter of semicircle=Diameter+2πr218=2r+πr18=r2+22718=r14+22718=r367r=18×736r=3.5 cmHence, radius of semicircle is 3.5 cm.

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3.5 cm

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hey man how did u get that , explain? answer is absolutely right!!

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fast urgent plzz tell me how got the answer?

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