import java.util.Scanner;

public class Main {

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

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

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

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

public class Main {

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