the question is below:
http://i197.photobucket.com/albums/aa173/jack021103/03.jpg
thx~~~
Mathematic Question...
2008-07-05 4:03 am
回答 (1)
2008-07-05 5:40 am
✔ 最佳答案
a) Q'N=QN=x //
QR=QN NR
NR=QR-QN
=16-x //
b) Q'N^2=NR^2 Q'R^2
x^2=(16-x)^2 8^2
x^2=256-32x x^2 64
x=10 cm //
c) QN=QR-NR
=16-6=10
When PM=2
MN^2=(QN-PM)^2 16^2
MN^2=(10-2)^2 256
MN=17.889cm (3 sig. fig.) //
參考: 080704A
收錄日期: 2021-04-23 18:03:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080704000051KK02314