If I have a rectangle of length 60 mm, width 6 mm, and thickness of 2 mm, how can I wrap this rectangle to become circular in shape like a ring? And what is the tool?
You could use the Sweep tool to create your ring shape. Sketch the profile of your part on one plane and sketch the path on another plane. Highlighting the profile (in 3D view) and selecting the path enables the Sweep tool.