The length of a cuboid is 3 cm, the width is 2 cm, and the height is 1 cm. What is the sum of the lengths of the sides of the cuboid?
一个长方体的长是3厘米，宽2厘米，高1厘米，这个长方体的棱长总和是多少cm
<gadget id="calculator">3 + 2 + 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>