标题: GWD 1-8 [打印本页]
作者: casualwalk 时间: 2005-11-30 14:14 标题: GWD 1-8
The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is 4PI/3ATH connecttype="rect" gradientshapeok="t" extrusionok="f">ATH>, what is the length of line segment RU?
A.4/3
B.8/3
C. 3
D. 4
E. 6
答案是D
但是我觉得如果RU为4的话，那么arcRTU应该是5Pi/3
大家看看我错在哪里了
作者: applebees 时间: 2005-12-2 12:55
upup!!!!!!!!!!!!
作者: casualwalk 时间: 2005-12-7 07:43
why ????
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