title: how to draw circle with radius in openlayers
body: <p>I want to draw a circle in openlayers with specific radius in km. with the center of specific geo point? I follow same as <a href="http://demo.gwt-openlayers.org/gwt_ol_showcase/GwtOpenLayersShowcase.html?example=Draw%20Regular%20Polygon%20Example" rel="nofollow">http://demo.gwt-openlayers.org/gwt_ol_showcase/GwtOpenLayersShowcase.html?example=Draw%20Regular%20Polygon%20Example</a> but I want to draw automatically with predefined values.</p>