The length of a rectangle is 8 cm and the width is 4 cm. If you push it to form a parallelogram, what is the perimeter of the parallelogram in centimeters?
一个长方形的长是8厘米，宽是4厘米，将它推一下变成了一个平行四边形，那么平行四边形的周长等于多少厘米
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>