maths circle

import java.util.Scanner;

public class maths_circle {
    public static void main(String[] args) {

        // declaring variables
        double circumference;
        double area;

        // ask for value from user
        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter the radius of the circle:  ");
        double radius = scanner.nextDouble();

        scanner.close();


        // calculations and re-assign
        circumference = 2 * Math.PI * radius;
        area = Math.PI * Math.pow(radius, 2);

        // printing our results displaying one digit after decimal place
        System.out.printf("Circumference: %.1fcm\n" , circumference);
        System.out.printf("Area: %.1fcm^2\n" , area);

    }
}