@TravisR thanks i have gone through the material already , my query is that none of the tools specifically say that it would create a centroid . Based on my knowledge is it safe to consider that any tool that ouputs a polygon also created a centroid ? e.g Spatial Match , Spatial Process , Buffer , trade area etc ?
I was checking one by one each tool and there is only one tool which actualy mentions output centroid and that is Spatial Info . So looks like only one tool does output centroid .