A cylinder and a cone with equal base and equal volume, the height of the cone is 9 meters, what is the height of the cylinder in meters
等底等体积的圆柱和圆锥，圆锥高是9米，圆柱高是多少米
<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>