The perimeter of a parallelogram is 36 cm, and the length of one set of opposite sides is 8 cm. What is the length of the opposite side of the parallelogram in centimeters
平行四边形的周长是36厘米，其中一组对边的长是8厘米．平行四边形另一组对边的长是多少厘米
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">36 - 16</gadget>
<output>20</output>

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

<result>10</result>