Problem C. 821. (October 2005)
C. 821. A unit square ABCD is rotated about its vertex C through 90o. Determine the area swept out by the side AB.
(5 pont)
Deadline expired on November 15, 2005.
Sorry, the solution is available only in Hungarian. Google translation
Megoldás:
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Statistics:
608 students sent a solution. 5 points: 437 students. 4 points: 44 students. 3 points: 23 students. 2 points: 9 students. 0 point: 50 students. Unfair, not evaluated: 45 solutionss.
Problems in Mathematics of KöMaL, October 2005