After cutting a cuboid whose length, width and height are 5cm, 4cm and 3cm respectively into two identical cuboids, what is the maximum increase in the surface area in cm**2.
把一个长、宽、高分别是5cm、4cm、3cm的长方体切成两个完全一样的长方体后，表面积最多增加多少cm**2．
<gadget id="calculator">5 * 4 * 2</gadget>
<output>40</output>

<result>40</result>