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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 points)

Deadline expired on 10 November 2015.

Statistics on problem B. 4740.
 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

•  Támogatóink: Morgan Stanley