Using 3.x API, how I can get center point and radius from circle made by Draw module?

[MilawK_]

Using the code below:
JS

initDrawRadiusCircle: function() {

radius = new Draw(this.map);

radius.on("draw-complete", this.addToMap);

},

drawRadiusCircle: function() {

this.map.graphics.remove(radiusGraphic);

radius.activate(Draw.CIRCLE);

},

addToMap: function(evt) {

radius.deactivate();

var symbol = new SimpleFillSymbol(); //.setColor(null).outline.setColor("blue");

radiusGraphic = new Graphic(evt.geometry, symbol);

this.map.graphics.add(radiusGraphic);

},

HTML 

<button

data-dojo-type="dijit/form/Button"

data-dojo-attach-event="onClick: drawRadiusCircle">Draw</button>

[RobertScheitlin__GISP]

Milaw,

//Require "esri/geometry/Polyline", "esri/geometry/geometryEngine",
addToMap: function(evt) {
  radius.deactivate();
  var symbol = new SimpleFillSymbol();
  radiusGraphic = new Graphic(evt.geometry, symbol);

  var cent = evt.geometry.getCentroid();
  var pnt = evt.geometry.getPoint(0, 0);
  var line = new Polyline([[pnt.x,pnt.y],[cent.x,cent.y]]);
  var rad = geometryEngine.geodesicLength(line, "meters");
  this.map.graphics.add(radiusGraphic);
},‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

[MilawK_]

Thank you for your help.

I will try your solution

Regards

Milaw.