A rectangle with a length of 3 decimeters and a width of 2 decimeters can be rotated around any side to obtain different cylinders. What is the volume of the larger cylinder (reserve π)
一个长方形长3分米，宽2分米，以它的任意一边做轴旋转，能得到不同的圆柱体，其中较大的一个圆柱体的体积是多少(保留π)
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<result>18</result>