Circle inscribed

Calculate the perimeter and area of a circle inscribed in a triangle measuring 3 , 4 and 5 cm.

Correct result:

S =  3.14 cm2
o =  6.28 cm

Solution:

r=2S1o1=aba+b+c=343+4+5=1 cm S=πr2=3.14 cm2
o=2πr=6.28 cm

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