To cut a cylinder into the largest cone, if the volume of the cone is 72 cubic centimeters, how many cubic centimeters should be cut.
把一个圆柱削成最大的圆锥，如果圆锥的体积是72立方厘米，就要削去多少立方厘米．
<gadget id="calculator">72 * 2</gadget>
<output>144</output>

<result>144</result>