6) The diameter of Kelly's bicycle wheel is 61cm.
a. How far will Kelly's bicycle go in one complete revolution of the wheel? In 3 revolutions?
b. Kelly cycles 1.5km to school. How many revolution will her bicycle wheel make?
show your work...please...
thanks
math(english)...help...10點
2008-02-22 4:19 pm
回答 (1)
2008-02-22 6:59 pm
✔ 最佳答案
6.) a)diameter x pi = circumferencein one revolution 61x 3.14 = 191.5cm
in three revolution 61x 3.14x3 =574.6cm
b) the number of revolution = 1.5x1000x100/191.5
=783
收錄日期: 2021-04-29 20:25:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080222000051KK00470