A cuboid with a side length of 8 cm is melted and cast into a cuboid with a cross-sectional area of 20 cm2. What is the length of the cuboid in cm?
把棱长8厘米的正方体铁块，熔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．
<gadget id="calculator">8 / 20</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">8 * 8 * (2/5)</gadget>
<output>128/5 = around 25.6</output>

<result>128/5 = around 25.6</result>