There is a trapezoid with an area of 48 square decimeters, and the sum of the upper and lower bases is 24 decimeters. What is the height of this trapezoid?
有一个梯形的面积48平方分米，上、下底的和是24分米，这个梯形的高是多少分米．
<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>