The upper and lower sides of a cuboid are squares, and its surface area is 126 square centimeters, which can be cut into three cubes of equal volume. What is the volume of a small cube in cubic centimeters?
一个长方体上下两个面是正方形，它的表面积是126平方厘米，正好可以截成三个体积相等的正方体，则一个小正方体的体积是多少立方厘米．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>