The area of a trapezoid is 22 square decimeters, and the sum of the upper and lower bases is 11 decimeters. What is its height?
一个梯形的面积是22平方分米，上、下底之和为11分米，它的高是多少分米．
<gadget id="calculator">2 / 11</gadget>
<output>2/11 = around 0.181818</output>

<gadget id="calculator">22 * (2/11)</gadget>
<output>4</output>

<result>4</result>