27 small cubes with a side length of 1 cm form a shape with the smallest surface area, what is the surface area
27个棱长为1厘米的小正方体拼成一个表面积最小的形体，表面积是多少
<gadget id="calculator">3 * 3 * 6</gadget>
<output>54</output>

<result>54</result>