First off, you will only be able to extrude one closed body, so unless the rectangle and circle are modified to be merged somehow, they will need to be separate extrudes.
Second, are the dimensions weak or strong (WF5 - white/yellow). If they are weak, you just define the dimension as you wish it to show, and the weak ones will disappear.
Sketch with weak dimensions.
Strong defined between centerline and circle center.
I hope this helps and welcome to the forum.
Dale