It is known that the area of a trapezoid is 12 square meters, its upper base is 4.2 meters, and its lower base is 5.8 meters. What is the height in meters?
已知一个梯形的面积是12平方米，它的上底是4.2米，下底是5.8米，高是多少米？
<gadget id="calculator">4.2 + 5.8</gadget>
<output>10</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">12 * (1/5)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>