Cut a cube with a side length of 3 cm into two equal cuboids, what is the total area of the two newly added faces in cm**2.
把一个棱长3cm的正方体切成两个相等的长方体，新增加的两个面的总面积是多少cm**2．
<gadget id="calculator">3 * 3 * 2</gadget>
<output>18</output>

<result>18</result>