Use small cubes with side lengths of 1 cm to form a larger cube. What is the minimum surface area of this cube?
用边长1厘米的小正方体，拼成一个较大的正方体，这个大方体的表面积至少是多少平方厘米．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 2 * 6</gadget>
<output>24</output>

<result>24</result>