A trapezoidal flower bed has an area of 56 square meters and the sum of the upper and lower bases is 16 meters. What is the height?
一个近似梯形的花坛，面积是56平方米，上下底之和是16米，高是多少．
<gadget id="calculator">2 / 16</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">56 * (1/8)</gadget>
<output>7</output>

<result>7</result>