Cut a section of cylinder into the largest cone. The volume of the cylinder is 9 cubic meters. What is the volume of the cone?
把一段圆柱形刚才切削成一个最大的圆锥，圆柱体体积是9立方米，圆锥体的体积是多少立方米．
<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>