public class Rectangle extends Shape {
	private double width; 
	private double height; {
		
	}
	
	public Rectangle(double width, double height) {
		super("四角形");
		this.width = width;
		this.height = height;
	}
	
	public double area() {
		return width * height;
	}
//	public void showInfo(){
//    	super.showInfo();
//		System.out.println("(半径:" + this.area + ")");
//	}

}