十萬火急-__-f1maths*

2010-04-28 3:51 am
The scale of a map is 1:4000.
a) If a path on the map is 2 cm, what is its actual length?
b) If the actual length of a path is 3 m, what is the length of this path on the map?
c) If the area of an estate on the map is 0.02m[2], find its actual area in km[2]?

十萬個THX!!!!!
更新1:

救命呀-__-吾該快d答我laplease/____\

更新2:

To ipkinian 我太愛你喇/___\

回答 (1)

2010-04-28 5:01 am
✔ 最佳答案
a)(1/4000)=(2/x)
x=8000cm=80m
b)(1/4000)=(3/x)
x=0.00075m=0.075cm
c) 1km=0.001m
1km[2]=0.000001m[2]
(1/0.000001)=(x/0.02)
x=2000km[2]

2010-04-27 21:04:09 補充:
如果做對,記得給分我呀!


收錄日期: 2021-04-23 22:26:04
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100427000051KK01305

檢視 Wayback Machine 備份