cylinder and a cone with equal volume and equal base area, if the height of the cylinder is 6 meters, what is the height of the cone in meters?
等体积等底面积的圆柱和圆锥，如果圆柱的高是6米，圆锥的高是多少米．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>