The upper base of a trapezoid is 1.6 cm, the lower base is 2.4 cm, and the height is 2.5 cm. What is the area in square centimeters?
一个梯形的上底是1.6厘米，下底是2.4厘米，高是2.5厘米，面积是多少平方厘米．
<gadget id="calculator">1.6 + 2.4</gadget>
<output>4</output>

<gadget id="calculator">2.5 / 2</gadget>
<output>1.25</output>

<gadget id="calculator">4 * 1.25</gadget>
<output>5</output>

<result>5</result>