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一个几何体的三视图如图,其中主视图、左视图都是腰长为6、底边长为3的等腰三角形,...
一个几何体的三视图如图,其中主视图、左视图都是腰长为6、底边长为3的等腰三角形,则这个几何体的侧面展开图的面积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193639643071495/SYS201311011936396430714011_ST/images0.png)
A.3π
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193639643071495/SYS201311011936396430714011_ST/0.png)
π
C.8π
D.9π
考点分析:
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