The sum of the edge lengths of a cuboid is 48 decimeters, what is the sum of the three edges starting from a vertex?
一个长方体的棱长和是48分米，从一个顶点出发的三条棱的和是多少分米．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>