import java.util.Scanner;
import java.math.BigDecimal;

public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	}
} import java.util.Scanner; Scanner java.util import java.math.BigDecimal; BigDecimal java.math public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	}
} Main public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	} main {

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) double r = scan.nextDouble(); r scan.nextDouble() scan.nextDouble scan final double CIRCLERATE = 3.141592653589; CIRCLERATE 3.141592653589 double s = CIRCLERATE * r * r; s CIRCLERATE * r * r CIRCLERATE * r * r CIRCLERATE r r double l = 2 * CIRCLERATE * r; l 2 * CIRCLERATE * r 2 * CIRCLERATE * r 2 CIRCLERATE r BigDecimal x = new BigDecimal(s); x new BigDecimal(s) x = x.setScale(5, BigDecimal.ROUND_HALF_UP) x x.setScale(5, BigDecimal.ROUND_HALF_UP) x.setScale x 5 BigDecimal.ROUND_HALF_UP BigDecimal BigDecimal.ROUND_HALF_UP BigDecimal y = new BigDecimal(l); y new BigDecimal(l) y = y.setScale(5, BigDecimal.ROUND_HALF_UP) y y.setScale(5, BigDecimal.ROUND_HALF_UP) y.setScale y 5 BigDecimal.ROUND_HALF_UP BigDecimal BigDecimal.ROUND_HALF_UP System.out.printf("%.5f" + " " + "%.5f", x, y) System.out.printf System.out System System.out "%.5f" + " " + "%.5f" "%.5f" + " " + "%.5f" "%.5f" " " "%.5f" x y String[] args args public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	}
} public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	}
} Main
import java.util.Scanner;
import java.math.BigDecimal;

public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		double r = scan.nextDouble();

		final double CIRCLERATE = 3.141592653589;

		double s = CIRCLERATE * r * r;
		double l = 2 * CIRCLERATE * r;

		BigDecimal x = new BigDecimal(s);
		x = x.setScale(5, BigDecimal.ROUND_HALF_UP);

		BigDecimal y = new BigDecimal(l);
		y = y.setScale(5, BigDecimal.ROUND_HALF_UP);

		System.out.printf("%.5f" + " " + "%.5f", x, y);
	}
}