1: //Circle.java 3: public class Circle extends Shape 4: { 5: private double radius; 7: public Circle 8: ( 9: Point center, 10: double radius 11: ) 12: { 13: this.radius = radius; 14: this.position = center; 15: } 17: @Override 18: public double computeArea() 19: { 20: return (Math.PI * Math.pow(radius, 2)); 21: } 22: }