The sum of the lengths of the sides of a cuboid is 48 meters. What is the sum of the lengths of the three sides that intersect at a vertex?
一个长方体的棱长总和为48米，相交于一个顶点的三条棱长度之和为多少米．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>