cone container and a cylinder container have the same bottom and height. It is known that the cone is filled with water and the height of the water is 9 cm. If all the water is poured into the cylinder container, what is the height of the water in cm?
一个圆锥体容器和一个圆柱体容器等底等高，已知圆锥体内装满了水，水高9厘米，若将全部的水倒入圆柱体容器，水高多少厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9 * (1/3)</gadget>
<output>3</output>

<result>3</result>