If two cylinders are similar and the ratio between the altitude lengths is 2 colon 3 what is the ratio of their volumes?

If two cylinders are similar, the ratio of their volumes is equal to the cube of the ratio of their corresponding linear dimensions. Given that the ratio of their altitudes is 2:3, the ratio of their volumes will be ( (2:3)^3 = 8:27 ). Thus, the ratio of their volumes is 8:27.