A set of adjacent sides of a parallelogram is 4 cm and 6 cm respectively, what is the perimeter of the parallelogram in cm
一个平行四边形的一组邻边分别是4厘米和6厘米，这个平行四边形的周长是多少cm
<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>