The side length of the square is 4dm. Rotate one side as the axis to get a three-dimensional figure. What is the volume of the three-dimensional figure in dm**3.
正方形的边长是4dm，以一边为轴旋转一周，得到一个立体图形，这个立体图形的体积是多少dm**3．
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16 * 4</gadget>
<output>200.96</output>

<result>200.96</result>