conical container with a height of 90 cm is filled with water. If water is poured into a cylindrical container with the same height as its bottom, what is the height of the water in cm?
有一个高为90厘米的圆锥形容器盛满了水，把水倒入和它等底等高的圆柱形容器中，水的高度是多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">90 * (1/3)</gadget>
<output>30</output>

<result>30</result>