标题: thanks to tongxun and another question [打印本页] 作者: 回家过年 时间: 2002-11-20 17:38 标题: thanks to tongxun and another question
80.R,T,U are points on a circle with a radius of 4, the arc RTU has a length of
4/3pai, what's the length of segment RTU?
[确认]4作者: tongxun 时间: 2002-11-20 22:12