Inscribed 44101

A circle is inscribed in the triangle with sides of 13 cm, 14 cm, and 15 cm. What is its radius?

Correct answer:

r =  4 cm

Step-by-step explanation:

a=13 cm b=14 cm c=15 cm  s=2a+b+c=213+14+15=21 cm S=s (sa) (sb) (sc)=21 (2113) (2114) (2115)=84 cm2  r=sS=2184=4 cm

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