A cuboid has a length of 3dm, a width of 2dm, and a height of 1dm. If its height is increased by 1dm, how much is the surface area of the obtained cuboid increased?
一个长方体长3dm，宽2dm，高1dm，如将它的高增加1dm，那么得到的长方体表面积增加了多少．
<gadget id="calculator">3 * 1 * 2</gadget>
<output>6</output>

<gadget id="calculator">2 * 1 * 2</gadget>
<output>4</output>

<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<result>10</result>