Area_of_Triangle_.java

import java.util.*;
public class code{
    public static void main(String[] args){
        Scanner my = new Scanner(System.in);
        double a,b,c,s,area;
        a = my.nextDouble();
        b = my.nextDouble();
        c = my.nextDouble();
        s = (a+b+c)/2;
        area = Math.sqrt(s*(s-a)*(s-b)*(s-c));
        System.out.printf("%.2f",area);
    }
}