用铁皮做一个工件,此工件原为圆柱体,现斜着截去一部分其中ab(高)长54厘米,cd(高)长46厘米,bd(直径)长15厘

用铁皮做一个工件,此工件原为圆柱体,现斜着截去一部分其中ab(高)长54厘米,cd(高)长46厘米,bd(直径)长15厘米需用铁皮最少( )平方厘米.急~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~急~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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快乐天使2005 幼苗

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make a workpiece using/by ironhide ; the original workpiece is a cylinder and now you need to truncate a part of it,which is line(可以省略) ab(height) about 54 cm,line ad(height) about 46cm,and line bd (diameter) about 15 cm.how many square centimeters is needed to take at least?
c

1年前

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