In a cylindrical container filled with water with a bottom radius of 2 decimeters and a height of 4 decimeters, a cylindrical iron rod with a bottom radius of 10 centimeters and a height of 48 centimeters is placed vertically. The volume of overflowing water is How many liters.
在一个盛满水的底面半径是2分米、高是4分米的圆柱形容器中，垂直放入一根底面半径是10厘米、高是48厘米的圆柱形铁棒，溢出水的体积是多少升．
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">3.14 * 100 * 4 * (1/100)</gadget>
<output>12.56</output>

<result>12.56</result>