The four sides of a quadrilateral are 12 cm, 14 cm, 19 cm, and 7 cm respectively. What is the perimeter of the quadrilateral?
一个四边形的四条边分别长12厘米、14厘米、19厘米、7厘米，这个四边形的周长是多少．
<gadget id="calculator">12 + 14 + 19 + 7</gadget>
<output>52</output>

<result>52</result>