/* Circle.java        Authors: Koffman & Wolz 
 * Represents a circle.
 * Extends GeoFigure 
 */
public class Circle extends GeoFigure {

  // Data Fields
  protected int radius;
 
  // Methods
  // Constructors
  public Circle() {}

  public Circle(int rad) {
    radius = rad;
  }

  // Modifiers
  public void setRadius(int rad) {
    radius = rad;
  }

  // Accessors:
  public int getRadius() {
    return radius;
  }

  // Operations
  public double computeArea() {
    return radius * radius * Math.PI;
  }

  public double computePerimeter() {
    return 2 * radius * Math.PI;
  }

  public String toString() {
    return "Circle: radius is " + radius;
  }

} // class Circle