There is a cube of iron with a side length of 8 decimeters. Now it is melted and cast into a cuboid with a cross-sectional area of 20 square centimeters. What is the length of this cuboid in centimeters? (solution with equation)
有一块棱长是8分米的立方体的铁块，现在要把它溶铸成一个横截面积是20平方厘米的长方体，这个长方体的长是多少厘米？(用方程解答)
<gadget id="calculator">8 * 10 * 8 * 10 * 8 * 10</gadget>
<output>512_000</output>

<gadget id="calculator">512_000 / 20</gadget>
<output>25_600</output>

<result>25_600</result>