A cone and a cylinder have the same volume and the same base area. The height of the cylinder is 6 decimeters. What is the height of the cone?
一个圆锥体和一个圆柱体体积相等，底面积也相等，圆柱的高是6分米，圆锥的高是多少．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>