Problem B. 4740. (October 2015)

B. 4740. Eight unit cubes, with corresponding edges parallel, are glued together to form a solid. Prove that the surface area of the resulting solid is at least 24 units. Only the outer surface counts, even if the resulting solid contains a cavity.

(6 pont)

Deadline expired on November 10, 2015.

Statistics:

44 students sent a solution.
6 points:	Gáspár Attila, Juhász 326 Dániel, Kerekes Anna.
5 points:	Simon Dániel Gábor.
4 points:	4 students.
3 points:	8 students.
2 points:	10 students.
1 point:	3 students.
0 point:	15 students.

Problems in Mathematics of KöMaL, October 2015