The area of a trapezoid is 36 square meters, the upper base is 8 meters, and the lower base is 4 meters. What is the height?
一个梯形面积是36平方米，上底是8米，下底是4米，高是多少？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">36 * (1/6)</gadget>
<output>6</output>

<result>6</result>