A cylinder and a cone have the same volume and the same base area. The height of the cylinder is 12 cm. What is the height of the cone in cm?
一个圆柱与一个圆锥体积相等，底面积也相等，圆柱的高是12cm，圆锥的高是多少cm．
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>