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(2008•大兴安岭)如图,小明想用图中所示的扇形纸片围成一个圆锥,已知扇形的半...
(2008•大兴安岭)如图,小明想用图中所示的扇形纸片围成一个圆锥,已知扇形的半径为5cm,弧长是6πcm,那么围成的圆锥的高度是
cm.
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