Cut a cube of wood with an edge length of 8 cm into the largest cylinder, what is the volume of the cylinder?
将棱长是8cm的正方体木块削成一个最大的圆柱，圆柱的体积多少．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16 * 8</gadget>
<output>401.92</output>

<result>401.92</result>