import java.util.Scanner;

public class CircleAreaAndPerimeter {
    public static void main(String[] args) {
        Scanner scanner= new Scanner(System.in);

        double r1 = Double.parseDouble(scanner.nextLine());
        double CircleArea1=  Math.PI*r1*r1  ;
        double Perimeter1 = 2* Math.PI*r1 ;
        System.out.printf("Area = %f%nPerimeter = %f",CircleArea1,Perimeter1);
    }
}