If the sum of the lengths of the sides of a cuboid is 36 cm, what is the sum of the lengths of all the sides intersecting at a vertex in cm?
一个长方体总棱长之和是36厘米，相交于一个顶点的所有棱长之和是多少厘米．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<result>9</result>