A cylinder and a cone have the same base diameter, and the height of the cone is 2/3 of the height of the cylinder. If the volume of the cylinder is 54 cubic centimeters, what is the volume of the cone in cubic centimeters?
一个圆柱和一个圆锥的底面直径相等，圆锥的高是圆柱的高的(2/3)，如果圆柱的体积是54立方厘米，那么圆锥的体积的体积是多少立方厘米．
<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">1 / (9/2)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">54 * (2/9)</gadget>
<output>12</output>

<result>12</result>