A conical container with a height of 12 cm is filled with water. If all the water is poured into a cylindrical container with the same bottom and height, what is the height of the water surface in cm?
圆锥形容器高12cm，容器中盛满水．如果将水全部倒入与它等底等高的圆柱形容器中，则水面高是多少cm．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>