The side of a cylinder is cut along the height to form a square. If the side length of the square is 18.84 cm, what is the radius of the base of the cylinder in cm?
一个圆柱的侧面沿高剪开后是正方形，若正方形的边长是18.84厘米，则圆柱的底面半径是多少厘米．
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<result>3</result>