A cylinder and a cone have the same base and height, and the volume of the cylinder is 12 cubic meters, what is the volume of the cone
一个圆柱和一个圆锥等底等高，这个圆柱的体积是12立方米，则这个圆锥的体积是多少
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>