If the side of a cylinder is expanded to form a square with a side length of 6.28 cm, what is the radius of the base of the cylinder in cm?
将一个圆柱的侧面展开正好是一个边长为6.28厘米的正方形，这个圆柱的底面半径是多少厘米．
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<result>1</result>