A cylinder and a cone have the same volume and the same base area, the height of the cylinder is 4 meters, and the height of the cone is how many meters.
一个圆柱和一个圆锥的体积相等，底面积也相等，圆柱的高是4米，圆锥的是高多少米．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

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

<result>12</result>