A rectangular wooden frame with a length of 6 cm and a width of 4 cm is drawn into a parallelogram. What is the perimeter of the parallelogram in cm?
将一个长是6厘米、宽是4厘米的长方形木框拉成一个平行四边形，这个平行四边形的周长是多少厘米．
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

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

<result>20</result>