Java :

import java.util.Scanner;
public class Main {
	
public static void main(String[] args) {
		// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
double s=5.5;
double a1=Math.round((s*s*3*1.732*10000)/2);
double a=a1/10000;
System.out.printf("The area of the hexagon is "+a);
	}

}