If 6 cubes with side lengths of 2 decimeters are glued together to form a cuboid, what is the maximum reduction in surface area in square decimeters?
用6个棱长为2分米的正方体粘合成一个长方体，表面积最多减少多少平方分米．
<gadget id="calculator">2 * 2 * 14</gadget>
<output>56</output>

<result>56</result>