The area of a trapezoid is 25 square centimeters, the upper base is 4 cm, the lower base is 6 cm, what is the height in cm? (solution by equation)
一个梯形的面积是25平方厘米，上底是4厘米，下底是6厘米，高是多少厘米？(用方程解)
<result>5</result>