http://juniormaths.learnmore.com.hk/OUP/JMaths/Paper/images/lm2b13_paper1b_q002.jpg
請列式計算！
畢氏定理(難)
2008-01-27 1:09 am
回答 (1)
2008-01-27 1:18 am
✔ 最佳答案
圖片參考：http://juniormaths.learnmore.com.hk/OUP/JMaths/Paper/images/lm2b13_paper1b_q002.jpg
設XZ=5x cm ,YZ=8x cm
(XY)^2+(XZ)^2=(YZ)^2 [畢氏定理]
(34)^2+(5x)^2=(8x)^2
1156+25x^2=64x^2
39x^2=1156
x=5.44
所以,YZ=8(5.44)=43.6cm(準至三位有效數字)
收錄日期: 2021-04-25 17:18:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080126000051KK02375