I am taking a practice test from the company that created the GMAT test. One geometry question has me baffled, because I get 40 and the correct answer according to the test is 2Pi (option 1). I have uploaded a picture of the question because I don't know how if it's possible to draw the circle and the lines that are in the circle on this forum. Can you please take a look and let me know what you think? Thank you.