A cuboid has a length of 3 cm, a width of 2 cm, and a height of 2 cm. What is the sum of the lengths of the sides of the cuboid in cm?
长方体的长3cm、宽2cm、高2cm，这个长方体的棱长总和是多少cm．
<gadget id="calculator">3 + 2 + 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<result>28</result>