If the height of a cylinder is increased by 1 cm, its surface area is increased by 50.24 square centimeters. What is the radius of the base of the cylinder in centimeters?
把一个圆柱的高增加1厘米，它的表面积增加50.24平方厘米，这个圆柱体的底面半径是多少厘米？
<gadget id="calculator">50.24 / 1 / 3.14 / 2</gadget>
<output>8</output>

<result>8</result>