Agreed. There is some ambiguity in the question. That is, does the radius r represent the medallion's radius that also includes the width of the frame S or is the radius r only for the face and the width S is seperate?
When I first had a crack at it, my answer was pis(2r+s) but when I included the width of S to be part of r, the answer changed to pis(2r-s).
true. but from the wording, it clearly says "a medallion surrounded by a metal frame...the radius of the medallion is r and the width of the frame is s"
it's either an error, or a horribly inspecific question if that was the intent.