It is known that the base radii of a cylinder and a cone are equal, and the ratio of the height of the cylinder to the height of the cone is 2:3, then when the volume of the cone is 18, what is the volume of the cylinder?
已知一圆柱和一圆锥的底面半径相等，圆柱的高和圆锥的高的比为2：3，那么当圆锥的体积为18时，圆柱的体积是多少．
<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<result>36</result>