The height of a conical container is 12dm, filled with water, if all the water is poured into a cylindrical container with the same height as its bottom, what is the height of the water surface in dm?
一个圆锥形容器的高是12dm，盛满水，将水全部倒入与它等底等高的圆柱形容器中，则水面高度为多少dm．
<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>