It is known that the perimeter of a parallelogram is 48cm, and the length of one side is 14cm. After stretching the parallelogram into a rectangle, cut it into two identical right-angled trapezoids. What is the area of each trapezoid in cm**2.
已知一个平行四边形的周长是48cm，它的一条边长是14cm．把这个平行四边形拉成一个长方形后，再裁剪成两个完全相同的直角梯形，每个梯形的面积是多少cm**2．
<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">24 - 14</gadget>
<output>10</output>

<gadget id="calculator">14 * 10</gadget>
<output>140</output>

<gadget id="calculator">140 / 2</gadget>
<output>70</output>

<result>70</result>