Intro Circ complete

import java.util.Scanner;

class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    final double PI = 3.14159;
    //declarations
    double area1, area2, circ1, circ2;
    int radius;

    //inputs initializations
    System.out.println("Please enter a radius:");
    radius = scan.nextInt();

    //calcualtions
    area1 = PI * radius * radius;
    circ1 = PI * radius * 2;
    radius = radius * 2;
    area2 = PI * radius * radius;
    circ2 = PI * radius * 2;


    //outputs
    System.out.println("The area of a circle with radius " + radius + " is " + area1);
    System.out.println("The circumference of a circle with radius " + radius + " is " + circ1);

    System.out.println("The area of a circle with radius " + radius + " is " + area2);
    System.out.println("The cricumference of a circle with radius " + radius + " is " + circ2);

    //your code
    System.out.println("Does area double? "+(area2/area1));
    System.out.println("Does circumference double? "+(circ2/circ1));

    //my code
    String areaDoubles=((area2 / area1)==2)?"yes":"no";
    System.out.println("Does area double? " + areaDoubles);
    String circDoubles=((circ2 / circ1)==2)?"yes":"no";
    System.out.println("Does circomference double? " + circDoubles);

  }
}