求教第8題答案，請詳述如何計算?
回答 (1)
2020-11-01 4:41 pm
∵ ABCD ~ DCEF
∴ AB/DC = BC/CE = CD/EF
3/DC = 3/4.5 = CD/x
From the first equation, DC = 4.5 cm.
Then, from the second equation,
3/4.5 = 4.5/x ⇒ x = 4.5²/3 = 6.75
The answer is B.
∴ AB/DC = BC/CE = CD/EF
3/DC = 3/4.5 = CD/x
From the first equation, DC = 4.5 cm.
Then, from the second equation,
3/4.5 = 4.5/x ⇒ x = 4.5²/3 = 6.75
The answer is B.
收錄日期: 2021-04-24 08:05:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201101083533AApz3kQ