Area/Perimeter

import java.util.Scanner;
 public class Окръжност {

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

	double r = Double.parseDouble(scanner.nextLine());
	double area = Math.PI * r * r;
	double perimeter = 2 * Math.PI * r;
	System.out.printf("Area = %f\n", area);
	System.out.printf("Perimeter = %f", perimeter);

	}
}