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

public class Main {

    public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.text.DecimalFormat; DecimalFormat java.text public class Main {

    public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    }
} Main public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    } main {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    } DecimalFormat df1 = new DecimalFormat("0.00000"); df1 new DecimalFormat("0.00000") BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) double r = Double.valueOf(br.readLine()); r Double.valueOf(br.readLine()) Double.valueOf Double br.readLine() br.readLine br double pi = Math.PI; pi Math.PI Math Math.PI String S = df1.format((double)( r * r * pi)); S df1.format((double)( r * r * pi)) df1.format df1 (double)( r * r * pi) r * r * pi r r pi String L = df1.format((double)( 2 * r * pi)); L df1.format((double)( 2 * r * pi)) df1.format df1 (double)( 2 * r * pi) 2 * r * pi 2 r pi System.out.println(S + " " + L) System.out.println System.out System System.out S + " " + L S + " " + L S " " L String[] args args public class Main {

    public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    }
} public class Main {

    public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DecimalFormat;

public class Main {

    public static void main(String[] args) throws IOException {

        DecimalFormat df1 = new DecimalFormat("0.00000");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        double r = Double.valueOf(br.readLine());

        double pi = Math.PI;

        String S = df1.format((double)( r * r * pi));
        String L = df1.format((double)( 2 * r * pi));

        System.out.println(S + " " + L);
    }
}