C. 821. A unit square ABCD is rotated about its vertex C through 90^{o}. Determine the area swept out by the side AB.
(5 points)
Deadline expired.
Google Translation (Sorry, the solution is published in Hungarian only.)
Megoldás:
.
Statistics on problem C. 821.  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 solutions. 


Problems in Mathematics of KöMaL, October 2005
