题目内容


如图,一圆柱高8 cm,底面半径为 cm,一只蚂蚁从点爬到点处吃食, 要爬行的最      短路程是(     )cm.

A.6                    B.8          C.10             D.12

                     

                                                                                                                                                                                                                     

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