The coordinates of Hong Kong and Beijing are (-2 , 3) and (7, 43) respectively.If one unit on the map represents an actual distance of 50 km, what is the actual distance between Hong Kong and Beijing?
我用間尺度beijing同hong kong既距離係5 cm.
plz show the steps
F3 MATHS ABOUT COORDINATES
2007-08-12 1:27 am
回答 (1)
2007-08-12 2:09 am
✔ 最佳答案
The distance between Hong Kong and Beijing in the coordinate system is given by sqrt([(-2) - 7]^2 + (3 - 43)^2) = sqrt((-9)^2 + (-40)^2) = sqrt(1681) = 41The actual distance = 41 * 50km = 2050km
收錄日期: 2021-04-18 22:56:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070811000051KK03724