import java.util.Scanner;


public class Main {

    public static void main(String[] args) {
        // TODO code application logic here
        Scanner sc=new Scanner(System.in);
        double r=2.0,w=6.0;
        while(sc.hasNext()){
            int t=sc.nextInt();
            for(int i=1;i<=t;i++){
            int l=sc.nextInt();
            double a1=(double) (Math.PI*(r*r));
            double a2=(l*w)-a1;
                System.out.printf("%.2lf %.2lf\n",a1,a2);
            }
        }
    }

}