If two cubes with side lengths of 1 cm are put together to form a cuboid, the surface area is reduced by how many square centimeters.
把两个棱长是1厘米的正方体，拼成一个长方体，表面积减少了多少平方厘米．
<gadget id="calculator">1 * 1 * 2</gadget>
<output>2</output>

<result>2</result>