個題數學題係︰(唔可以只得答案！！要步驟！！！要解釋)
From 2:15 p.m. to 5:30 p.m. , how many degrees does thehour hand of a clock rotate?
一條英文數學題(F.1)希望有人可以幫到手！！
2010-12-18 9:20 pm
回答 (1)
2010-12-18 10:50 pm
✔ 最佳答案
The hour hand rotates 360 deg for every 12 hours. (as 12 hours = 12 x 60 = 720 minutes) = The hour hand rotates 360 deg in 720 minutesPeriod (Minutes) = 5:30 - 2:15 = 3 hour 15 minutes = 3 x 60 + 15 = 195 minutes
Deg of Hour Hand rotated = 360 x 195/720 = 97.5 deg.
收錄日期: 2021-04-13 17:43:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101218000051KK00444