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