[機經] 數學 #96
96) 有一個傳送帶,被兩個等大的輪軸繃著,有圖,大家想像一下吧。傳送帶長2m,輪
軸的直徑0.2m,問沒有圍著輪軸的傳送帶有多長?
答案:2-pie*0.2
請問這題該怎麼做呢?
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