A cone has the same volume as a cylinder, and the radius of the base is also the same. The height of the cone is 12 cm. What is the height of the cylinder in cm?
一个圆锥与一个圆柱的体积相等，底面半径也相等，圆锥的高是12厘米，圆柱高是多少厘米．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>