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

public class Main {
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.IOException; IOException java.io import java.lang.Math; Math java.lang public class Main {
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    }
} Main public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    } main {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) double r = Double.parseDouble(br.readLine()); r Double.parseDouble(br.readLine()) Double.parseDouble Double br.readLine() br.readLine br double area = Math.PI * (r * r); area Math.PI * (r * r) Math.PI Math Math.PI (r * r) r r double circumference = 2 * (Math.PI * r); circumference 2 * (Math.PI * r) 2 (Math.PI * r) Math.PI Math Math.PI r System.out.printf("%6f %6f", area, circumference) System.out.printf System.out System System.out "%6f %6f" area circumference String[] args args public class Main {
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    }
} public class Main {
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    }
} Main
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.lang.Math;

public class Main {
    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.parseDouble(br.readLine());
        
        double area = Math.PI * (r * r);
        double circumference = 2 * (Math.PI * r);
        
        System.out.printf("%6f %6f", area, circumference);
    }
}