There is a cube of wood, its edge length is 10 cm, now this wood is processed into the largest cylinder, what is the volume of the cylinder.
有一块正方体木料，它的棱长是10厘米，现在把这块木料加工成一个最大的圆柱，圆柱的体积是多少．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 10</gadget>
<output>785</output>

<result>785</result>