After an iron block is fully submerged in a cylindrical water bucket with a bottom radius of 4 decimeters, the water level in the bucket rises by 2 decimeters. What is the volume of this iron block in cubic decimeters?
把一个铁块全部浸没在一个底面半径4分米的圆柱体水桶后，桶中的水面高度上升了2分米，这个铁块的体积是多少立方分米？
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

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

<result>100.48</result>