A cylinder has a lateral area of 25.12 square centimeters and a height of 4 centimeters. What is the diameter of its base?
一个圆柱的侧面积是25.12平方厘米，高是4厘米，它的底面直径是多少．
<gadget id="calculator">25.12 / 4 / 3.14</gadget>
<output>2</output>

<result>2</result>