The upper base of a trapezoid is 3 meters, the lower base is 2 meters, and the height is 2 meters. What is the area of the trapezoid?
一个梯形的上底是3米，下底是2米，高是2米，这个梯形的面积是多少平方米．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">5 * 1</gadget>
<output>5</output>

<result>5</result>