A cylinder and a cone have the same volume and base area. If the height of the cylinder is 18 cm, what is the height of the cone in cm?
一个圆柱和一个圆锥，体积和底面积都相等，如果圆柱的高是18cm，则圆锥的高是多少cm
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>