Triangle SSS

Calculate perimeter and area of ​​a triangle ABC, if a=53, b=46 and c=40.

Correct result:

p =  139
T =  891.619

Solution:

a=53 b=46 c=40  p=a+b+c=53+46+40=139
s=p/2=139/2=1392=69.5  T=s⋅ (s−a)⋅ (s−b)⋅ (s−c)=69.5⋅ (69.5−53)⋅ (69.5−46)⋅ (69.5−40)=891.619

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