08. Circle Area and Perimeter

import java.util.Scanner;

public class T17 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double RadiusR = Double.parseDouble(scanner.nextLine());

        double CalcArea = (RadiusR * RadiusR) * Math.PI;
        double CalcParameter = 2 * Math.PI * RadiusR;

        System.out.printf("%.2f", CalcArea);
        System.out.println();
        System.out.printf("%.2f", CalcParameter);

    }
}