How many square centimeters will the surface area be increased by sawing a cube with side length 3 cm into two cuboids of the same size?
把一个棱长是3厘米的正方体锯成两个同样大的长方体后，表面积会增加多少平方厘米．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<result>18</result>