The figure above shows part of a circle whose circumference is 45.if arcsof length 2 and length b continue to alternate around the entire circle so that there are 18 arcs of each length ,what is the DEGREE measure of each of the arcs of length
要图的百度搜一下
不太理解这题目的意思
whose circumference 这个whose修饰哪个词?
懂了，