If a cylinder is cut into the largest cone with a volume of 84 cubic centimeters, what is the volume of the original cylinder in cubic centimeters?
将一个圆柱削成一个最大的圆锥体，体积是84立方厘米，原来圆柱的体积是多少立方厘米．
<gadget id="calculator">84 * 3</gadget>
<output>252</output>

<result>252</result>