The area of a trapezoid is 16 square meters, and the sum of the upper and lower bases is 8 meters. What is the height in meters?
一个梯形面积是16平方米，上底与下底的和是8米，那么高是多少米．
<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">16 * (1/4)</gadget>
<output>4</output>

<result>4</result>