The three edges of a cuboid intersecting at a point are 6cm, 5cm, and 4cm respectively. What is the sum of the lengths of the sides of this cuboid in cm?
长方体相交于一点的三条棱分别是6cm，5cm，4cm，这个长方体的棱长之和是多少cm．
<gadget id="calculator">5 + 6 + 4</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>