class Circle implements GeometricObject{
  protected double radius = 1.0;

  public Circle(double radius){
    this.radius = radius;
  }
  public double getPerimeter(){
    return Math.PI * 2 * this.radius;
  }
  public double getArea(){
    return Math.PI * (this.radius * this.radius);
  }
}
class ResizableCircle extends Circle implements Resizable{

  public ResizableCircle(double rad){
    radius = rad;
  }
  public void resize(int percent){
    double per = (double) percent;
    double temp = this.radius * (per/100);
    this.radius = temp;
  }
}