If the volume of a cone is 12 cubic meters less than that of a cylinder with the same base and height, what is the volume of the cone?
一个圆锥体积比它等底等高的圆柱体积少12立方米，圆锥体积是多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<result>12</result>