If 27 small cubes with edge lengths of 1 cm are assembled into a cube, what is the surface area of the big cube in square centimeters?
把27个棱长都是1厘米的小正方体拼成一个达正方体，大正方体的表面积是多少平方厘米．
<gadget id="calculator">3 * 3 * 6</gadget>
<output>54</output>

<result>54</result>