Put together four small cubes with side lengths of 1 cm to form a cuboid with the smallest surface area. What is the surface area of this cuboid in square centimeters?
将四个棱长为1厘米的小正方体拼成一个表面积最小的长方体，这个长方体的表面积是多少平方厘米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

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

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>