One side of a parallelogram is 24 cm, and its adjacent side is 4 cm shorter than it. What is the perimeter of the parallelogram in cm?
一个平行四边形的一条边是24厘米，它的邻边比它少4厘米，这个平行四边形的周长是多少厘米．
<gadget id="calculator">24 - 4</gadget>
<output>20</output>

<gadget id="calculator">24 + 20</gadget>
<output>44</output>

<gadget id="calculator">44 * 2</gadget>
<output>88</output>

<result>88</result>