Take a cube with side length 2dm. Divide evenly into two small cuboid blocks, the surface area increases by how many square decimeters.
把一个棱长是2dm的正方体木块．平均分成两个小长方体木块，表面积增加了多少平方分米．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>