import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {

	public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	}
} Main public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	} main {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	} double r = 0; r 0 double pi = Math.PI; pi Math.PI Math Math.PI BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String str = br.readLine(); str br.readLine() br.readLine br r = Double.parseDouble(str) r Double.parseDouble(str) Double.parseDouble Double str double equ = r * r * pi; equ r * r * pi r * r * pi r r pi double loc = r * 2 * pi; loc r * 2 * pi r * 2 * pi r 2 pi String eAnswer = String.format("%.6f", equ); eAnswer String.format("%.6f", equ) String.format String "%.6f" equ String lAnswer = String.format("%.6f", loc); lAnswer String.format("%.6f", loc) String.format String "%.6f" loc System.out.println(eAnswer + " " + lAnswer) System.out.println System.out System System.out eAnswer + " " + lAnswer eAnswer + " " + lAnswer eAnswer " " lAnswer String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	}
} public class Main {

	public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args) throws IOException {
		double r = 0;
		double pi = Math.PI;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		
		r = Double.parseDouble(str);
		
		double equ = r * r * pi; 
		double loc = r * 2 * pi;
		
		String eAnswer = String.format("%.6f", equ);
		String lAnswer = String.format("%.6f", loc);
		
		System.out.println(eAnswer + " " + lAnswer);
	}
}