MIA(oBtA circle with centre P is inscribed in the Δ ABC. Side AB, sid – InterviewSolution

1.	MIA(oBtA circle with centre P is inscribed in the Δ ABC. Side AB, side BCand side AC touch the circle at points L, M and N respectively. Radiusof the circle is rProve that :AA ABC) =-(AB + BC + AC) × r.P.T.O
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