A cylinder and a cone have the same base area and volume. If the height of the cone is 12 decimeters, what is the height of the cylinder?
一个圆柱和圆锥，底面积和体积相等．已知圆锥的高是12分米，那么圆柱的高是多少分米．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>