If 4 cubes with side lengths of 3 cm are glued together to form a cuboid, what is the maximum reduction in their surface area in square centimeters?
把4个棱长3厘米的正方体粘成一个长方体，它们的表面积最多会减少多少平方厘米．
<gadget id="calculator">3 * 3 * 8</gadget>
<output>72</output>

<result>72</result>