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A circle inscribed in a triangle ABC tou...

A circle inscribed in a triangle ABC touches its sides AB, BC and AC at the points D, E and F, respectively. If AB = 18cm, BC = 15cm and AC = 13 cm then the value of of AD+BE+CF is:
एक त्रिभुज ABCमें अंकित एक वृत्त क्रमशः AB, BC और AC के भुजाओं D, E और F को स्पर्श करता है। यदि AB = 18 सेमी, BC = 15 सेमी और AC = 13 सेमी है तो AD+ BE+ CF का मान है:

A

25

B

33

C

23

D

20

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