Thx, my earth radius is too long ,if it is 6370km,the answer is

來源: jinjing 於 2011-09-15 10:16:25 [檔案] [舊帖] [給我悄悄話] 閱讀數 : (59 bytes)

回答: 84 由 guest007 於 2011-09-15 09:56:00

Welcome back,I miss you...at first I forgot 2pai,...

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• 6370/6400*85=84 -jinjing- ♀ (0 bytes) () 09/15/2011 postreply 10:17:40

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