The sum of the lengths of the sides of a cuboid is 80dm, what is the sum of the lengths of the three different sides of the cuboid in dm
一个长方体的棱长总和是80dm，这个长方体三条不同棱长的和是多少dm
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<result>20</result>