A cylinder and a cone with the same base and height, the volume of the cone is 6 cubic centimeters, what is the volume of the cylinder in cubic centimeters?
等底等高的圆柱和圆锥，圆锥的体积6立方厘米，圆柱的体积是多少立方厘米．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<result>18</result>