krug

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double R= scan.nextDouble();
        double C = 2 * 3.14 * R;
        double S = 3.014 *R*R;
        System.out.println("R:"+R);
        System.out.println("C="+C);
        System.out.println("S="+S);

    }

}