A cube of wood with an edge length of 4 decimeters is cut into the largest cylinder. What is the volume of the cylinder?
一把棱长4分米的正方体木料，削成一个最大圆柱，圆柱的体积是多少立方分米？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 * 4</gadget>
<output>50.24</output>

<result>50.24</result>