The area of a trapezoid is 26 square centimeters. It is known that its upper base is 5.5 cm and the lower base is 2.5 cm. What is the height of this trapezoid in cm?
一个梯形的面积是26平方厘米，已知它的上底是5.5厘米，下底2.5厘米，这个梯形的高是多少厘米．
<gadget id="calculator">5.5 + 2.5</gadget>
<output>8</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">26 * (1/4)</gadget>
<output>13/2 = around 6.5</output>

<result>13/2 = around 6.5</result>