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Create > Boolean.
First, set Operation to Subtract. Next, use the face selection filter, , to apply the outer circle surface body as the Target Body. Then, use the face selection filter, , to apply the inner circle surface body as the Tool Body. Lastly, click Generate. At this point if you zoom into the center of the circle you should see the 1m diameter hole, as shown below.

Create a Bisecting Line

The purpose of this step and the following two steps is to imprint a line onto the geometry that will, allow for radial edge sizing in the meshing step.

Click on XYPlane in the tree and it should highlight blue. Then, click the new sketch button, . In the new sketch draw a line on the y axis that goes through both of the concentric circles. Make sure that it is coincident to the y axis. Then trim the line segments that lay inside of the inner circle and the line segments that lay outside of the outer circle. This, is carried out by using the Trim feature located in the Modify portion of Sketching.

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