The sum of the upper and lower bases of a trapezoid is 6 cm and the height is 1.6 cm. What is its area in square centimeters?
一个梯形的上底和下底的和是6厘米，高是1.6厘米，它的面积是多少平方厘米
<gadget id="calculator">1.6 / 2</gadget>
<output>0.8</output>

<gadget id="calculator">6 * 0.8</gadget>
<output>4.8</output>

<result>4.8</result>