View Code of Problem 24

#include<stdio.h>
#include<math.h>
int main()
{
   double a,b,c;
   scanf("%lf %lf %lf",&a,&b,&c);
   double s;
   s=(a+b+c)/2;
   double area=sqrt(s*(s-a)*(s-b)*(s-c));
   printf("%.2f",area);	
}