The area of a trapezoid is 3.44cm**2, its upper base is 1.5cm, and its lower base is 2.8cm. How high is it?
一个梯形的面积是3.44cm**2，它的上底是1.5cm，下底是2.8cm．高是多少？
<gadget id="calculator">1.5 + 2.8</gadget>
<output>4.3</output>

<gadget id="calculator">2 / 4.3</gadget>
<output>0.465116</output>

<gadget id="calculator">3.44 * 0.465116</gadget>
<output>1.599999</output>

<result>1.599999</result>