The length of a cuboid is 10 cm, the width is 8 cm, and the height is 2 cm. What is the sum of the lengths of the sides of this cuboid?
一个长方体的长是10厘米，宽是8厘米，高是2厘米，这个长方体的棱长之和是多少厘米．
<gadget id="calculator">10 + 8 + 2</gadget>
<output>20</output>

<gadget id="calculator">20 * 4</gadget>
<output>80</output>

<result>80</result>