The lengths of the three edges of a cuboid intersecting at a vertex are 5cm, 3cm, and 4cm respectively. What is the sum of the lengths of all the edges of the cuboid in cm?
一个长方体相交于一个顶点的三条棱分别长5cm，3cm，4cm，这个长方体的所有棱长之和是多少cm．
<gadget id="calculator">5 + 3 + 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<result>48</result>