A conical container with a height of 18 cm is filled with water, and then all the water is poured into a cylindrical container with the same bottom as it. What is the height of the water surface in cm?
一个圆锥形容器，高18厘米，里面装满了水，然后把水全部倒入和它等底的圆柱形容器里，水面高多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 * (1/3)</gadget>
<output>6</output>

<result>6</result>