It is known that the sum of the upper and lower bases of the trapezoid is 12 centimeters, and its area is 36 square centimeters. What is the height of the trapezoid in centimeters?
已知梯形的上、下底的和是12厘米，它的面积是36平方厘米，这个梯形的高是多少厘米．
<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">36 * (1/6)</gadget>
<output>6</output>

<result>6</result>