The upper base of a right-angled trapezoid is 10 cm. If the upper base is increased by 2 cm, it becomes a square. What is the area of the original trapezoid in square centimeters?
一个直角梯形的上底是10厘米，如果上底增加2厘米，就变成了一个正方形，原来梯形的面积是多少平方厘米．
<gadget id="calculator">10 + 10 + 2</gadget>
<output>22</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">22 * 6</gadget>
<output>132</output>

<result>132</result>