cylindrical bucket has a volume of 28 cubic decimeters and a bottom area of 7 square decimeters. If it is filled with water, how many decimeters is the height of the water surface?
一个圆柱形水桶容积是28立方分米，底面积是7平方分米，装满水，水面的高度多少分米？
<gadget id="calculator">28 / 7</gadget>
<output>4</output>

<result>4</result>