A large spool of rope rolls on the ground with the end of the rope lying on the top edge of the spool...?

A large spool of rope rolls on the ground with the end of the rope lying on the top edge of the spool. A person grabs the end of the rope and walks a distance 0.5m, holding onto it. The spool rolls behind the person without slipping. What length of rope unwinds from the spool? How far does the spool’s center of m move