trapezoidal vegetable plot has an upper base of 7.2 meters, a lower base of 10.8 meters, and a height of 5 meters. How many square meters does this trapezoidal vegetable plot have?
一块梯形菜地，上底为7.2米，下底为10.8米，高为5米，这块梯形菜地的面积有多少平方米？
<gadget id="calculator">7.2 + 10.8</gadget>
<output>18</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">18 * (5/2)</gadget>
<output>45</output>

<result>45</result>