vimalshahmph Wrote:in the question it clearly says that
figure is a top view of medallion made of circular glass surrounded by the frame.
the next line says radius of the medallion is r.........
if you take a good hard look...... you will figure it out......haste is waste while reading the problem.......
this would be a 600 level problem..........
remember, guys, there's little point in estimating the difficulty level of problems. even if you could somehow ascertain the precise difficulty level (which of course you can't), that's not the point.
the only "difficulty level" that matters - for a student studying for the exam - is "too easy for me / just right / too hard for me".
the only people who should care about numerical difficulty levels are people who write exams.
the point of studying these sorts of problems is to
learn takeaways that you can take into other problems, a goal that is completely independent of the official difficulty level of the problem.