The lengths of the three sides of a triangle are 3cm, 5cm, and 6cm respectively. What is the perimeter of the triangle in cm?
一个三角形的三条边长分别是3cm、5cm、6cm，这个三角形的周长是多少cm．
<gadget id="calculator">3 + 5 + 6</gadget>
<output>14</output>

<result>14</result>