Cut a cylinder into the largest cone, and the volume of the cone obtained is 18 cubic centimeters. What is the original volume of the cylinder in cubic centimeters?
把一个圆柱削成一个最大的圆锥，得到的圆锥体积是18立方厘米，原来这个圆柱的体积是多少立方厘米．
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>