If the sum of the sides of a cuboid is 48 centimeters, what is the sum of the lengths of the three sides starting from a vertex in centimeters?
一个长方体棱长之和是48厘米，那么从一个顶点出发的三条棱长之和是多少厘米．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>