The sum of the lengths of all the edges of a cuboid is 16 decimeters, what is the sum of the lengths of the three edges that intersect at the same vertex?
一个长方体所有棱长的和是16分米，相交于同一顶点的三条棱长的和是多少分米．
<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>