There is a rectangular iron plate with a length of 5 cm and a width of 3 cm. If it is rotated around the length axis to form a three-dimensional figure, what is the volume of the three-dimensional figure in cubic centimeters?
有一块长5厘米、宽3厘米的长方形铁片，如果以长为轴转动一周，形成一个立体图形，这个立体图形的体积是多少立方厘米．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 5</gadget>
<output>141.3</output>

<result>141.3</result>