Ex. Bank #20

// Shavit Borisov
// HW

import java.util.Scanner;

public class PiCalculation {

    public static void main(String[] args)

    {
        Scanner in = new Scanner (System.in);

        int input;
        double pi = 0;

        System.out.print("Enter a nubmer: ");
        input = in.nextInt();

        for(int i = 1; i <= input; i++)
        {
            pi += 1 / (Math.pow(i, 2));
        }

        pi = Math.sqrt(6*pi);
        System.out.printf("Pi = %f", pi);

        in.close();
    }

}