import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String s = br.readLine();

        double r = Double.parseDouble(s);
        String area = String.format("%.6f", r*r*Math.PI);
        String circum = String.format("%.6f", r*2*Math.PI);
        System.out.println(area + " " + circum);
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String s = br.readLine();

        double r = Double.parseDouble(s);
        String area = String.format("%.6f", r*r*Math.PI);
        String circum = String.format("%.6f", r*2*Math.PI);
        System.out.println(area + " " + circum);
    }
} Main public static void main(String[] args) throws IOException {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String s = br.readLine();

        double r = Double.parseDouble(s);
        String area = String.format("%.6f", r*r*Math.PI);
        String circum = String.format("%.6f", r*2*Math.PI);
        System.out.println(area + " " + circum);
    } main {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String s = br.readLine();

        double r = Double.parseDouble(s);
        String area = String.format("%.6f", r*r*Math.PI);
        String circum = String.format("%.6f", r*2*Math.PI);
        System.out.println(area + " " + circum);
    } BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1); br new BufferedReader(new InputStreamReader(System.in), 1) String s = br.readLine(); s br.readLine() br.readLine br double r = Double.parseDouble(s); r Double.parseDouble(s) Double.parseDouble Double s String area = String.format("%.6f", r*r*Math.PI); area String.format("%.6f", r*r*Math.PI) String.format String "%.6f" r*r*Math.PI r*r*Math.PI r r Math.PI Math Math.PI String circum = String.format("%.6f", r*2*Math.PI); circum String.format("%.6f", r*2*Math.PI) String.format String "%.6f" r*2*Math.PI r*2*Math.PI r 2 Math.PI Math Math.PI System.out.println(area + " " + circum) System.out.println System.out System System.out area + " " + circum area + " " + circum area " " circum String[] args args
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br =
            new BufferedReader(new InputStreamReader(System.in), 1);
        String s = br.readLine();

        double r = Double.parseDouble(s);
        String area = String.format("%.6f", r*r*Math.PI);
        String circum = String.format("%.6f", r*2*Math.PI);
        System.out.println(area + " " + circum);
    }
}