A cuboid stick with a length of 2 meters has a cross-section of a square with a side length of 2 cm. If it is cut into 3 sections on average, how much does the surface area increase?
一根长2米的长方体木棍，横截面是边长2厘米的正方形，把它平均截成3段，表面积增加了多少．
<gadget id="calculator">2 * 2 * 4</gadget>
<output>16</output>

<result>16</result>