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如图,小红同学要用纸板制作一个高4cm,底面周长是6πcm的圆锥形漏斗模型,若不...
如图,小红同学要用纸板制作一个高4cm,底面周长是6πcm的圆锥形漏斗模型,若不计接缝和损耗,则她所需纸板的面积是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102505355564331/SYS201311031025053555643003_ST/images0.png)
A.12πcm
2B.15πcm
2C.18πcm
2D.24πcm
2
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