In a cylindrical container with a bottom diameter of 8 cm, there is some water, and an iron block is immersed in the water. At this time, the depth of the water is 15 cm. After the iron block is taken out of the water, the water level drops to 13cm. What is the volume of the iron block?
在一个底面直径为8cm的圆柱形容器里，装有一些水，水中浸入了一个铁块，此时量得水深15cm．把铁块从水中取出后，水面下降到13cm，这个铁块的体积是多少？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">15 - 13</gadget>
<output>2</output>

<gadget id="calculator">3.14 * 16 * 2</gadget>
<output>100.48</output>

<result>100.48</result>