import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    }
} import java.text.DecimalFormat; DecimalFormat java.text import java.text.NumberFormat; NumberFormat java.text import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    }
} Main public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    } main {
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    } Double r r length length area area pi; pi NumberFormat nf = new DecimalFormat("0.000000"); nf new DecimalFormat("0.000000") Scanner sc = new Scanner(System.in); sc new Scanner(System.in) pi = Math.PI pi Math.PI Math Math.PI r = sc.nextDouble() r sc.nextDouble() sc.nextDouble sc length = 2*r*pi length 2*r*pi 2*r*pi 2 r pi area = r*r*pi area r*r*pi r*r*pi r r pi System.out.println(nf.format(area) + " " + nf.format(length) ) System.out.println System.out System System.out nf.format(area) + " " + nf.format(length) nf.format(area) + " " + nf.format(length) nf.format(area) nf.format nf area " " nf.format(length) nf.format nf length String[] args args public class Main {
    public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    }
} public class Main {
    public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    }
} Main
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Double r,length,area,pi;
        NumberFormat nf = new DecimalFormat("0.000000");
        Scanner sc = new Scanner(System.in);
        pi = Math.PI;
        r = sc.nextDouble();
        length = 2*r*pi;
        area = r*r*pi;
        System.out.println(nf.format(area) + " " + nf.format(length) );
    }
}