The ratio of the base area of a cylinder to a cone is 2:1, and the ratio of volume is 3:2. If the height of the cylinder is 3 cm, what is the height of the cone in cm?
一个圆柱和一个圆锥的底面积之比是2：1，体积之比是3：2，．如果圆柱的高是3厘米，那么圆锥的高是多少厘米．
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>