The length of a cuboid is 5dm, the width is 4dm, and the height is 2dm. What is the sum of the lengths of its sides in dm?
一个长方体的长是5dm，宽是4dm，高是2dm，它的棱长之和是多少dm．
<gadget id="calculator">5 + 4 + 2</gadget>
<output>11</output>

<gadget id="calculator">11 * 4</gadget>
<output>44</output>

<result>44</result>