import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
	public static void main(String[] args) throws IOException{
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	}
} 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{
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	}
} Main public static void main(String[] args) throws IOException{
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	} main {
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

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


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	}
} public class Main {
	public static void main(String[] args) throws IOException{
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
	public static void main(String[] args) throws IOException{
		String str[];
        double r;
        double area,circumference;
        String a,c;


        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        str = br.readLine().split(" ");
        r = Double.parseDouble(str[0]);

        area = r * r * Math.PI;
        circumference = (r + r) * Math.PI;
        a = String.format("%.6f", area);
        c = String.format("%.6f", circumference);
        System.out.println(a + " " + c);
	}
}