/**
 * instructor: Ray Ortigas
 * Date: Summer 2000
 * http://www.dgp.toronto.edu/~rayo/tutorials/108/2000summer/
 */

// A circle.
public class Circle extends Shape {
    
    // The radius of this circle.
    public int radius;
    
    // Constructs a new circle with the given radius 'r'.
    public Circle(int r) {
        radius = r;
    }
    
    // Returns the area of this circle.
    public int getArea() {
        return (int)(Math.PI * radius * radius);
    }
    
    // Returns a string representation of this 
    public String toString() {
        
        // Notice that we are using the toString() method inside
        // Shape (Circle's superclass) to construct part of our string.
        return super.toString() + "; radius = " + radius;
    }
}