If the volume difference between a cone and a cylinder with the same base and height is 12 cubic decimeters, what is the volume of the cone?
一个圆锥与和它等底等高的圆柱体积相差12立方分米，圆锥的体积是多少立方分米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>