體積相等的圓錐與圓柱，半徑比為 2: 1。試求圓錐高度：圓柱高度。(A) 3:4 (B) 4:3 (C) 2:3 (D) 3:

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17. 體積相等的圓錐與圓柱，半徑比為 2: 1。試求圓錐高度：圓柱高度。
(A) 3:4
(B) 4:3
(C) 2:3
(D) 3:2.

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