cylinder and a cone have the same volume and the same base area. If the height of the cylinder is 6 cm, what is the height of the cone?
一个圆柱与圆锥等体积等底面积，如果圆柱的高为6厘米，圆锥的高是多少．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>