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根據周長可以知道半徑是0.5米,所以一個底面的面積是4分之π平方米;兩個底面積就是2分之3.14平方米;根據底面周長和高可以求出側面積為15.7平方米,表面積就是(15.7+2分之3.14)平方米.真是的,不能編輯數學符號,所以難看點,3.14就是π哇
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