The ratio of the area of a cylinder to the bottom of a cone is 1:4, and the volume ratio is 5:6. It is known that the height of the cylinder is 10cm, so what is the height of the cone in cm?
一个圆柱和一个圆锥底面积的比是1：4，体积比是5：6，已知圆柱高10cm，那么圆锥高，多少cm．
<result>9</result>