Question

PLEASE answer this question
best explanation will get BRAINLIEST answer title​

Answer 1

Answer:

Step-by-step explanation:

We can divide ΔABC into three triangles respectively,

ΔAPB,  ΔBPC and ΔAPC

Therefore Ar(ΔABC) = Ar(ΔAPB) + Ar(ΔBPC) + Ar(ΔAPC)

                                 = (1/2 * AB * r) + (1/2 * BC * r) + (1/2 * AC * r)

                                 = 1/2(AB + BC + AC) * r

Hence Proved

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