A cube paper box is placed on the table, it covers the area of 9dm**2 of the table, how many decimeters is the sum of the lengths of the sides of this cube paper box?
一个正方体纸盒放在桌面上，它盖住桌面9dm**2的面积，这个正方体纸盒的棱长总和是多少分米？
<gadget id="calculator">3 * 12</gadget>
<output>36</output>

<result>36</result>