[IQ題] ８×８是多少？很神奇喔~~

請大家想想看啦！公仔箱論壇4 Z, O* J& [ S2 j+ i( N2 [. @

哈哈，tvb now,tvbnow,bttvb& D8 a/ k4 W# R. R W% y

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TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。. F$ _' m$ a J. i9 P5 c' V j
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beckyken

上將軍

Rank: 12

2^#

發表於 2010-1-13 02:52 AM | 只看該作者

It looks really clear that your drawing having no change. Each cutting shape is matched with the other shapes. However, most of the cut triangles are too small to combine with the other cut triangle to become 1. By mathmetically, the area remain the same as 64. According to your drawing / cutting, you have 2 long triangle with 2 ladder shapes. The area of 2 long triangle is 2 each of (base x height / 2), which is 2x(3x8/2)= 24, and the area of 2 ladder shapes is 2each of (upper side + lower side)xheight /2), which is 2x((3+5)x5/2)=40. It ended up the total area is 24+40= 64. This is the same area as 8x8=64.

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chew8913

平民

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發表於 2010-1-29 04:15 PM | 只看該作者

hahahaha

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fannhf

上級忍者

Rank: 4

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發表於 2010-1-29 05:46 PM | 只看該作者

There are a gap between the slope of 甲 and 丁TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。+ r- |% ?% [, |# |
There are also find the gap between the slope of 乙 and 丙

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