import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    }
} Main public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    } main {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) double r = scan.nextDouble(); r scan.nextDouble() scan.nextDouble scan double cir = (r * 2) * Math.PI; cir (r * 2) * Math.PI (r * 2) r 2 Math.PI Math Math.PI double area = r * r * Math.PI; area r * r * Math.PI r * r * Math.PI r r Math.PI Math Math.PI System.out.printf("%6f %6f",area, cir) System.out.printf System.out System System.out "%6f %6f" area cir String[] args args public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double r = scan.nextDouble();
        double cir = (r * 2) * Math.PI;
        double area = r * r * Math.PI;

        System.out.printf("%6f %6f",area, cir);
    }
}