Use three cubes of the same size to form a cuboid. The surface area of the cuboid is 168 square centimeters. What is the surface area of each cube?
用三个同样大小的正方体拼成一个长方体，长方体的表面积是168平方厘米，每个正方体的表面积是多少．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 - 4</gadget>
<output>14</output>

<gadget id="calculator">168 / 14</gadget>
<output>12</output>

<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<result>72</result>