There are two iron sheets, one is a circle with a radius of 3 cm, and the other is a rectangle with a length of 30 cm and a width of 25 cm. Use this circular iron sheet as the base to make a cylinder. What is the maximum volume of the cylinder in cubic centimeters?
有两块铁皮，一块是半径为3厘米的圆，另一块是长30厘米，宽25厘米的长方形，用这块圆形铁皮为底做一个圆柱，圆柱的容积最大是多少立方厘米
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 30</gadget>
<output>847.8</output>

<result>847.8</result>