Mathematics
Senior High
為什麼E2的體積是3
表面積是6
4個方塊體積不應該是4嗎?
用邊長的正方形鐵皮,焊成一系列之多面體E1、E2、Es、...…,如下圖。
依此類推,求E10(10層之多面體)之體積為220
(+(1+2)+(1+2+3)+(1+2++102
10x1
=220#
1 表面積
E₁
E2
E3
+2+3
(1+2+11 +10) x 6 = 330 ±
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