Circumference 43531

A triangle with a circumference of 69 cm has one side three times shorter than the longest of them and the other 3 cm shorter than the longest of them. Find the area of the triangle.

Correct answer:

S =  142.1818 cm2

Step-by-step explanation:

o=69 cm a = c/3 b = c3  o = a+b+c  o=c/3+(c3)+c 69=c/3+(c3)+c  7c=216  c=7216=30.85714286  c=721630.857143  a=c/3=30.8571/3=77210.2857 cm b=c3=30.85713=719527.8571 cm  s=2a+b+c=210.2857+27.8571+30.8571=269=34.5 cm  S=s (sa) (sb) (sc)=34.5 (34.510.2857) (34.527.8571) (34.530.8571)=142.1818 cm2

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