If 3 cubes with side lengths of 3 cm are put together to form a cuboid, the surface area will be reduced by how many square centimeters compared to the original.
把3个棱长为3cm的正方体拼成一个长方体，表面积比原来的减少多少平方厘米．
<gadget id="calculator">3 * 3 * 4</gadget>
<output>36</output>

<result>36</result>