A cylindrical container is put into a cube iron block. The height of the water surface is 8 cm. After taking it out, the water level drops by 3 cm. The circumference of the container is 62.8 cm. What is the volume of the iron block?
一个圆柱形容器，放入正方体铁块，水面高度是8厘米，取出后水面下降了3厘米，容器周长是62.8厘米，铁块体积是多少？
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100 * 3</gadget>
<output>942</output>

<result>942</result>