The area of a trapezoid is 152m**2. It is known that the sum of the upper and lower bases is 38m. What is the height in m?
一个梯形的面积是152m**2，已知上底与下底的和是38m，高是多少m．
<gadget id="calculator">2 / 38</gadget>
<output>1/19 = around 0.052632</output>

<gadget id="calculator">152 * (1/19)</gadget>
<output>8</output>

<result>8</result>