The volume of a cone is 12 cubic decimeters, the area of the base is 3 square decimeters, what is the height?
一个圆锥体的体积是12立方分米，底面积是3平方分米，高是多少．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>