问题
解答题
一个正方体铁盒，棱长2.5dm，要在它的外面喷上一层油漆．喷漆部分的面积是多少平方分米？
答案
2.5×2.5×6，
=6.25×6，
=37.5（平方分米）；
答：喷油漆部分的总面积是37.5平方分米．
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一个正方体铁盒，棱长2.5dm，要在它的外面喷上一层油漆．喷漆部分的面积是多少平方分米？
2.5×2.5×6，
=6.25×6，
=37.5（平方分米）；
答：喷油漆部分的总面积是37.5平方分米．
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