There is a rectangle with a length of 5 cm and a width of 2 cm. Rotate the rectangle with the length of the rectangle as the axis of symmetry to obtain a cylinder. What is the volume of the cylinder?
有一个长5厘米，宽2厘米的长方形，以长方形的长为对称轴旋转这个长方形得到一个圆柱，求圆柱的体积是多少？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 5</gadget>
<output>62.8</output>

<result>62.8</result>