import java.util.Scanner;
public class lingkaran
{
    public static void main(String [] args)
    {
        double phi=3.14;
        double r,luas,keliling;
        Scanner I=new Scanner (System.in);
        System.out.print("Masukkan Jari-jari Lingkaran : ");
        r=I.nextInt();
                luas=phi*r*r;
                keliling=2*phi*r;
        System.out.println("Luas Lingkaran = "+luas);
        System.out.println("Keliling Lingkaran = "+keliling);
    }
}