Triangle

The triangle has known all three sides: a=5.5 m, b=5.3 m, c= 7.8 m.
Calculate area of ​this triangle.

Correct result:

S =  14.5616 m2

Solution:

a=5.5 b=5.3 c=7.8 s=(a+b+c)/2=(5.5+5.3+7.8)/2=9310=9.3 S=s (sa) (sb) (sc)=9.3 (9.35.5) (9.35.3) (9.37.8)=14.5616 m2

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