The area of a trapezoid is 48 square meters. The sum of its upper and lower bases is 24 meters. What is its height in meters?
一个梯形的面积是48平方米，它的上、下底之和是24米，它的高是多少米．
<gadget id="calculator">2 / 24</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">48 * (1/12)</gadget>
<output>4</output>

<result>4</result>