Draw A Circle

var circle:Shape; 

drawCircle(100, 100, 75, 0xFF0000);

function drawCircle(x:Number, y:Number, radius:Number, color:uint){
 circle = new Shape; 
 circle.graphics.beginFill(color); 
 circle.graphics.drawCircle(x, y, radius);
 circle.graphics.endFill(); 
 addChild(circle);   
}