The area of a trapezoid is 65 square centimeters and the height is 10 centimeters. What is the sum of its upper and lower bases in centimeters?
一个梯形的面积是65平方厘米，高10厘米，它的上底和下底之和是多少厘米．
<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">65 * (1/5)</gadget>
<output>13</output>

<result>13</result>