package hjkgk;public class Rectangle {public double width;public double height;public double getSize(　　) {return 2 * (width + height);}public double getArea(　　) {return width * height;}public static void main(String] args) {Rectangle rectangle = new Rectangle(　　);rectangle.width = 20;rectangle.height= 10;System.out.println(　　)); System.out.println(　　));}}package hjkgk;public class Rectangle {public double width;public double height;public double getSize(　　) {return 2 * (width + height);}public double getArea(　　) {return width * height;}public static void main(String] args) {Rectangle rectangle = new Rectangle(　　);rectangle.width = 20;rectangle.height= 10;System.out.println(　　)); System.out.println(　　));}}