The lateral area of a cylinder is 565.2 square decimeters, and the radius of the base is 5 decimeters. How many decimeters is its height?
一个圆柱的侧面积是565.2平方分米，底面半径5分米，它的高是多少分米？
<gadget id="calculator">2 * 3.14 * 5</gadget>
<output>31.4</output>

<gadget id="calculator">565.2 / 31.4</gadget>
<output>18</output>

<result>18</result>