cylinder and a cone have the same volume, the ratio of their base areas is 3:4, the height of the cylinder is 12 centimeters, how many centimeters is the height of the cone.
一个圆柱和一个圆锥的体积相等，它们底面积的比是3：4，圆柱的高是12厘米，圆锥的高是多少厘米．
<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">12 * (9/4)</gadget>
<output>27</output>

<result>27</result>