import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    } main {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

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

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        double r = sc.nextDouble();

        System.out.printf("%f %f\n", Math.PI * Math.pow(r, 2), 2 * Math.PI * r);
    }
}