Xiao Cong uses a rectangular piece of hard paper to draw an expanded surface area of a cube with a side length of 2 cm. What is the minimum area of this rectangular piece of paper in square centimeters?
小聪用一张长方形的硬纸片，画一个棱长为2厘米的正方体表面积展开图，这张长方形纸片的面积至少是多少平方厘米．
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

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

<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<result>40</result>