If a piece of wood with side length 6cm is cut into two cuboid pieces of the same size, how much will the surface area increase?
一块棱长6cm的木块，截成两个同样大小的长方体木块，表面积增加多少．
<gadget id="calculator">6 * 6 * 2</gadget>
<output>72</output>

<result>72</result>