操場一圈200公尺，恬恬以每秒5公尺的速率，繞了學校操場2圈，要花多少時間?
回答 (2)
2017-03-09 5:58 pm
✔ 最佳答案
time=200*2/5
=80s
2017-03-25 8:41 pm
(200*2)/5
=400/5
=80(s)
80/60
=1min20s
=400/5
=80(s)
80/60
=1min20s
收錄日期: 2021-04-18 16:04:31
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170309094112AAqChkG