There is a cylinder of steel with a base radius of 4 cm and a length of 2 meters. It is to be melted and cast into a cuboid steel with a cross-sectional area of 4 square centimeters. What is the length of the cuboid in centimeters?
有一个圆柱体钢材，底面半径是4厘米，长是2米，要把它熔铸成横截面面积是4平方厘米的长方体的钢材，这个长方体的长是多少厘米？
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">2 * 100</gadget>
<output>200</output>

<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">3.14 * 16 * 50</gadget>
<output>2_512</output>

<result>2_512</result>