package com.gmail.mykhalskiyv;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int a = 9;
		int b = 12;
		int c = 7;
		int p = (a + b + c) / 2;
		double s = Math.sqrt(p * (p - a) * (p - b) * (p - c));
		System.out.println("The square of triange whith sides: a = " + a + ", b = " + b + ", c = " + c + " is S = " + s);
	}

}