import java.util.Scanner;

public class CircleMeasurements {

    public static void main(String args[]) {

        final double PI = 3.14159;

        // Prompt the user to enter a radius
        System.out.print("Please enter the radius of the circle: ");

        // Create a Scanner for reading console input
        Scanner in = new Scanner(System.in);

        // Read a double value
        double radius = in.nextDouble();

        // diameter = radius * 2
        System.out.println("Diameter is " + 2 * radius);
        // perimeter = 2 * pi * radius
        System.out.println("Perimeter is " + 2 * PI * radius);
        // area = pi * radius * radius
        System.out.println("Area is " + PI * radius * radius);

        // Close the Scanner
        in.close();
    }
}