A cylinder and a cone have the same volume and base area respectively. If the height of the cylinder is 6 cm, what is the height of the cone in cm?
一个圆柱和一个圆锥的体积和底面积分别相等，如果圆柱的高是6厘米，那么圆锥的高是多少厘米．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>