送交者: steven 于 2005-8-11, 14:21:44:
回答: 用作数学竞赛题的确不算难的，但作为小学生作业还是过分了 由 自如 于 2005-8-11, 13:44:03:
and engineering machanics background to solve this problem. 80 sqm plate, even it is only 1 cm thin, this plate weightss around 62 kg, and wall made out of such a thin plate can't be very high without reinforcement, that's another constrain. In other words, this problem can't be solved by ordinary 5 grader.