The area of a trapezoidal cabbage field is 216 square meters, and the sum of its upper and lower bases is 54 meters, so what is its height in meters?
一块梯形白菜地的面积是216平方米，它的上、下底的和是54米，那么它的高是多少米．
<gadget id="calculator">2 / 54</gadget>
<output>1/27 = around 0.037037</output>

<gadget id="calculator">216 * (1/27)</gadget>
<output>8</output>

<result>8</result>