If a cube of wood with side length 5 decimeters is sawed into 3 identical cuboids, the total surface area will be increased by how many square decimeters.
把一根棱长5分米的正方体木料锯成3个相同的长方体，表面积一共增加了多少平方分米．
<gadget id="calculator">5 * 5 * 4</gadget>
<output>100</output>

<result>100</result>