
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	}
} Main public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	} main {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) double num1 = scanner.nextDouble(); num1 scanner.nextDouble() scanner.nextDouble scanner System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI)) System.out.println System.out System System.out String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI) String.format String "%.6f %.6f" Math.pow(num1, 2)
				* Math.PI Math.pow(num1, 2) Math.pow Math num1 2 Math.PI Math Math.PI num1 * 2 * Math.PI num1 * 2 * Math.PI num1 2 Math.PI Math Math.PI String[] args args public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	}
} public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	}
} Main

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		double num1 = scanner.nextDouble();
		System.out.println(String.format("%.6f %.6f", Math.pow(num1, 2)
				* Math.PI, num1 * 2 * Math.PI));
	}
}