import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	}
} import java.util.Scanner; Scanner java.util public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	}
} Main public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	} main {
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	} Scanner in = new Scanner(System.in); in new Scanner(System.in) double a = in.nextDouble(); a in.nextDouble() in.nextDouble in double area = a*a*Math.PI; area a*a*Math.PI a*a*Math.PI a a Math.PI Math Math.PI double circumference = 2*a*Math.PI; circumference 2*a*Math.PI 2*a*Math.PI 2 a Math.PI Math Math.PI String x = String.format("%.6f", area); x String.format("%.6f", area) String.format String "%.6f" area String y = String.format("%.6f", circumference); y String.format("%.6f", circumference) String.format String "%.6f" circumference System.out.println(x+" "+y) System.out.println System.out System System.out x+" "+y x+" "+y x " " y String[] args args public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	}
} public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	}
} Main
import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		double a = in.nextDouble();
		double area = a*a*Math.PI;
		double circumference = 2*a*Math.PI;
		String x = String.format("%.6f", area);
		String y = String.format("%.6f", circumference);
		System.out.println(x+" "+y); 
	}
}