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(2009•芜湖)如图,上下底面为全等的正六边形礼盒,其正视图与侧视图均由矩形构...
(2009•芜湖)如图,上下底面为全等的正六边形礼盒,其正视图与侧视图均由矩形构成,正视图中大矩形边长如图所示,侧视图中包含两全等的矩形,如果用彩色胶带如图包扎礼盒,所需胶带长度至少为( )
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A.320cm
B.395.24cm
C.431.77cm
D.480cm
考点分析:
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