Fill a conical container with a height of 12 cm with water and pour it into a cylindrical container with the same area as its bottom. What is the height of the water in cm?
把一个高12厘米的圆锥形容器装满水，倒进一个和它底面积相等的圆柱形容器里，水高多少厘米．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>