一個積分旋轉的問題!請幫忙翻譯及解答!

我又來詢問數學了!希望可以幫忙翻譯及解答!The region bounded by f(x)=(6x-x^2) and x-axis between x= 1 and x=5 is rotated about the y-axis. Find the volume of the solid that is generated.
問: The region bounded by f ( x ) ＝ ( 6x － x2 ) and x-axis between x ＝ 1 andx ＝ 5 is rotated about the y-axis. Find the volume of the solid that is ge-nerated.求曲線 f ( x ) ＝ ( 6x － x2 ) 與 x 為界

在 x ＝ 1 and x ＝ 5 之區域繞 y 軸旋轉形成之旋轉體積解: 旋轉體積: