Mathematical and Physical Journal
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Problem B. 4716. (May 2015)

B. 4716. The rhombus \(\displaystyle ABFE\) determined by sides \(\displaystyle AB\) and \(\displaystyle AE\) is cut out of a regular pentagon \(\displaystyle ABCDE\). Determine the centre of mass of the remaining concave pentagonal plate \(\displaystyle BCDEF\).

Suggested by P. Dombi, Pécs

(3 pont)

Deadline expired on June 10, 2015.


Statistics:

62 students sent a solution.
3 points:Andó Angelika, Kocsis Júlia, Kuchár Zsolt, Tóth Viktor.
2 points:Bereczki Zoltán, Cseh Kristóf, Csorba Benjámin, Dobák Dávid, Gál Hanna, Glasznova Maja, Hansel Soma, Horeftos Leon, Khayouti Sára, Kovács 246 Benedek, Leitereg Miklós, Nagy 555 Botond, Nagy-György Zoltán, Páli Petra, Schrettner Bálint, Simon Dániel Gábor, Stein Ármin, Széles Katalin, Török Tímea, Török Zsombor Áron, Váli Benedek, Varga-Umbrich Eszter, Várkonyi Dorka, Wiandt Péter.
1 point:27 students.
0 point:4 students.
Unfair, not evaluated:3 solutions.

Problems in Mathematics of KöMaL, May 2015