The lateral area of a cylinder is 25.12 square decimeters, and the radius of the bottom is 2 decimeters. What is its height in decimeters?
一个圆柱体的侧面积是25.12平方分米，底面半径是2分米，它的高是多少分米．
<gadget id="calculator">25.12 / 3.14 / 2 / 2</gadget>
<output>2</output>

<result>2</result>