#include<stdio.h>
#include<math.h>
int main()
{
float a,b,c;
float s,area;
printf("Enter size of each sides of triangle");
scanf("%f%f%f",&a,&b,&c);
s = (a+b+c)/2;
area = sqrt(s*(s-a)*(s-b)*(s-c));
printf("Area of triangle is: %.3f",area);
return 0;
}
Output:
Enter size of each sides of triangle 3
4
2
Area of triangle is: 2.90
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