The sum of the lengths of the sides of a cuboid is 36 centimeters, what is the sum of the lengths of the three sides that intersect at a vertex in centimeters
一个长方体的棱长总和是36厘米，相交于一个顶点的三条棱长之和是多少厘米
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<result>9</result>