Cut off 18 cubic centimeters from a cylinder to obtain the largest cone. What is the volume of the cone in cubic centimeters?
把一个圆柱体削去18立方厘米，得到一个最大的圆锥体，圆锥体的体积是多少立方厘米．
<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<result>9</result>