If the volume and area of the base of a cylinder are equal to the volume and area of the base of a cone respectively, the height of the cylinder is 6dm, and the height of the cone is dm.
如果一个圆柱的体积、底面积分别与一个圆锥的体积、底面积相等，已知圆柱的高是6dm，圆锥的高是多少dm．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>