function Circle(radius){ this.radius = radius; this.getArea = function(){ return (this.radius*this.radius*3.14);
}
this.getCircumference = function(){ var diameter = this. radius*2; var circumference = diameter*3.14; return circumference;
var bigCirde = new Circle(100); var smallCirde = new Circle(2);
alert(bigCircle.getAreaO); // displays 31400 alert(smallCircle.getCircumference()); //displays 12.56