There is a cube of wood, its edge length is 4 decimeters, if it is processed into the largest cylinder, what is the volume of the cylinder?
有一个正方体的木料，它的棱长是4分米，把它加工成最大的圆柱，圆柱的体积是多少？
<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>