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//Example 2.15
//To determine area of triangle when 3 sides are given
clc,clear
c=7 //side oposite to vertex C
a=5 //side opposite to vertex A
b=4 //side opposite to vertex B
s= (a+b+c)/2 //semi perimeter
area_K = sqrt(s*(s-a)*(s-b)*(s-c)) //using herons formula
printf('Area of triangle ABC = %.2f square units',area_K)
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