Problem K. 439. (December 2014)
K. 439. Each side of the figure in the diagram is 10 cm long, and each interior angle is \(\displaystyle 30^\circ\), \(\displaystyle 60^\circ\), \(\displaystyle 150^\circ\), or \(\displaystyle 300^\circ\). Find the area of the figure.
(6 pont)
Deadline expired on January 12, 2015.
Statistics:
114 students sent a solution. 6 points: 75 students. 5 points: 10 students. 4 points: 11 students. 3 points: 6 students. 2 points: 3 students. 1 point: 1 student. Unfair, not evaluated: 8 solutionss.
Problems in Mathematics of KöMaL, December 2014