Xiaohong uses 3 cubes with a surface area of 12cm**2 to form a cuboid. What is the surface area of this cuboid in cm**2?
小红用3个表面积是12cm**2的正方体拼成了一个长方体，这个长方体的表面积是多少cm**2．
<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">36 - 8</gadget>
<output>28</output>

<result>28</result>