It is known that the base area of a cylinder and a cone are equal, the volume of the cone is 1/4 of the cylinder, the height of the cone is 9cm, how many centimeters is the height of the cylinder?
已知一个圆柱和一个圆锥的底面积相等，圆锥的体积是圆柱的(1/4)，圆锥的高是9cm，圆柱的高是多少厘米？
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>