A trapezoidal wheat field has an area of 135 square meters and the sum of its upper and lower bases is 50 meters. What is its height in meters?
一块梯形麦田，面积是135平方米，上、下底之和是50米，它的高是多少米．
<gadget id="calculator">2 / 50</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">135 * (1/25)</gadget>
<output>27/5 = around 5.4</output>

<result>27/5 = around 5.4</result>