The diameter of the bottom of a cylindrical glass container is 10cm, and the height of the water surface is 12cm. If an iron block is immersed in the container, the height of the water surface rises to 14cm. What is the volume of the iron block?
一个圆柱形玻璃容器的底面直径是10cm，水面高12cm，把一个铁块浸没在这个容器内，水面高度上升到14cm，这个铁块的体积是多少？
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">14 - 12</gadget>
<output>2</output>

<gadget id="calculator">3.14 * 25 * 2</gadget>
<output>157</output>

<result>157</result>