import java.io.IOException;
import java.util.Scanner;

public class Main{
	public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

	System.out.printf("%.6f %.6f", area,cir);
	sc.close();
	}
} import java.io.IOException; IOException java.io import java.util.Scanner; Scanner java.util public class Main{
	public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

	System.out.printf("%.6f %.6f", area,cir);
	sc.close();
	}
} Main public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

	System.out.printf("%.6f %.6f", area,cir);
	sc.close();
	} main {
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

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

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

	System.out.printf("%.6f %.6f", area,cir);
	sc.close();
	}
} public class Main{
	public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

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

public class Main{
	public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

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