A cylinder and a cone have the same base but different heights. It is known that the volume of the cylinder is (2/3) the volume of the cone, and the height of the cylinder is 12 cm. Then what is the height of the cone in cm?
一个圆柱与一个圆锥等底不等高，已知圆柱的体积是圆锥体积的(2/3)，圆柱的高是12厘米，那么这个圆锥的高是多少厘米．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<result>54</result>