摩天輪的直徑是25米,明威坐在摩天輪上以2.5米每秒的平均速率轉動了4周,共要多少分鐘？
Thank you!!!
Thank you!!!
數學題不太懂help me!!!Thank you!!!
2010-04-22 5:15 am
回答 (3)
2010-04-22 6:01 am
2010-04-22 7:53 pm
circumference=22/7*25=550/7
total distance travelled=circumference*4=550/7*4=2200/7
time needed=total distance travelled/speed=2200/7/2.5=880/7s
total distance travelled=circumference*4=550/7*4=2200/7
time needed=total distance travelled/speed=2200/7/2.5=880/7s
2010-04-22 5:51 am
我lum系40分鐘掛!
唔好太信我a,因為可能錯ga!
唔好太信我a,因為可能錯ga!
收錄日期: 2021-04-23 20:44:26
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100421000051KK01453