View Code of Problem 24

import java.text.NumberFormat;
import java.util.Scanner;
public class Main {
	public void sum(int a,int b,int c){
		double d=0.5*(a+b+c);
		double t=Math.sqrt(d*(d-a)*(d-b)*(d-c));
		NumberFormat result=NumberFormat.getInstance();
		result.setMinimumFractionDigits(2);
		String e=result.format(t);
		System.out.println(e);
	}
	public static void main(String[] args) {
		Scanner s=new Scanner(System.in);
		int a=s.nextInt();
		int b=s.nextInt();
		int c=s.nextInt();
		Main test=new Main();
		test.sum(a,b,c);
		}
}

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