The area of a trapezoid is 72 square centimeters, the upper base is 12.4 cm, and the lower base is 5.6 cm. What is the height in cm?
一个梯形的面积是72平方厘米，上底是12.4厘米，下底是5.6厘米，高是多少厘米？
<gadget id="calculator">12.4 + 5.6</gadget>
<output>18</output>

<gadget id="calculator">2 / 18</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">72 * (1/9)</gadget>
<output>8</output>

<result>8</result>