What is wrong with the following code? Correct it.

public class Circle{

private double radius;

public Circle(double radius){

radius = radius;

}

public double getArea(){

return radius* radius*Math.PI;

}

class B extends Circle{

private double length;

B(double radius, double length)

{

Circle(radius);

length = length;

}

public double getArea(){

return getArea()*length;

}

}