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标题: 请教GWD 3-8 [打印本页]

作者: 游魂    时间: 2005-9-4 08:14     标题: 请教GWD 3-8


Q8:

B

INE>INE>INE>INE>INE>INE>


A C

In the figure shown, the triangle is inscribed in the semicircle. If the length of line segment AB is 8 and the length of line segment BC is 6, what is the length of arc ABC?

A. 15p

B. 12p

C. 10p

D. 7p

E. 5p


作者: himba    时间: 2005-9-4 16:44

勾股定理,得AC=10,也就是圆直径为10,问半圆的弧长(=圆周长的一半)

所以PI*10/2=5PI...


作者: 游魂    时间: 2005-9-6 13:18

谢谢版主!!!




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