Triangle SSS

Calculate the perimeter and area of ​​a triangle ABC if a=40, b=35, and c=55.

Correct answer:

p =  130
T =  698.212

Step-by-step explanation:

a=40 b=35 c=55  p=a+b+c=40+35+55=130
s=p/2=130/2=65  T=s (sa) (sb) (sc)=65 (6540) (6535) (6555)=50 195=698.212

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