Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
Already signed up?
New to KöMaL?

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.


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