The diameter of the bottom surface of a cylindrical container is 20 cm, and the water depth is 18 cm. After putting a piece of iron into the container, the water depth is 23 cm. What is the volume of this piece of iron in cubic centimeters?
一个圆柱形容器的底面直径是20厘米，水深18厘米，把一块铁放入这个容器后，水深23厘米，这块铁的体积是多少立方厘米？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

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

<gadget id="calculator">23 - 18</gadget>
<output>5</output>

<gadget id="calculator">3.14 * 100 * 5</gadget>
<output>1_570</output>

<result>1_570</result>