A cylinder and a cone have equal base areas. If water is poured from a conical cup with a water level of 12 cm into a cylindrical cup, what is the height of the water level in the cylindrical cup?
一个圆柱和一个圆锥的杯子，它们的底面积相等．装有12厘米高水位的圆锥形杯子的水倒入圆柱形的杯子里去，圆柱形杯子的水位高多少厘米．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>