10/2=5厘米(底银厅散面半径)3.14*8*10=251.2平方厘米(侧面积)3.14*5*5=78.5平方厘锋氏米(底面积)78.5*2+251.2=408.2平方厘伏散米(表面积)78.5*8=628立方厘米(体积)
3.14×﹙10÷2﹚²×2+3.14×10×8=408.2cm² 表面积3.14×﹙宏逗10÷2﹚伏芦²×8=628cm³缺绝带 体积
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