Fill a 9 cm high conical container with water and pour it into a rectangular parallelepiped container with the same bottom and height, what is the height of the water surface in cm
用一个高9厘米的圆锥形容器盛满水后倒入和它等底等高的长方体容器中，水面高是多少厘米
<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>