The area of a trapezoid is 550 square centimeters, its upper base is 37 cm, and its lower base is 13 cm. What is its height in cm?
一个梯形的面积是550平方厘米，它的上底是37厘米，下底是13厘米，则它的高是多少厘米．
<gadget id="calculator">37 + 13</gadget>
<output>50</output>

<gadget id="calculator">2 / 50</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">550 * (1/25)</gadget>
<output>22</output>

<result>22</result>