cylindrical container with a height of 8 cm and a volume of 50 ml is filled with water. A cylindrical rod with a length of 16 cm is vertically inserted into the bottom of the cup, and water overflows. After the rod is drawn out of the water, the height of the water is only 6 cm. Find the volume of the rod.
有一个高8厘米，容积50毫升的圆柱形容器，装满水，将一只长16厘米圆柱形棒垂直插至杯底，有水溢出．把棒从水中抽出后，水的高度只有6厘米，求棒的体积．
<gadget id="calculator">50 / 8</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">(25/4) * 2</gadget>
<output>25/2 = around 12.5</output>

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

<result>25</result>