Xiaohong has measured that the circumference of a circular stone pillar is 125.6 cm. What is the radius of this circular stone pillar in centimeters?
小红量得一个圆形石柱的周长是125.6cm，这个圆形石柱的半径是多少厘米？
<gadget id="calculator">125.6 / 3.14 / 2</gadget>
<output>20</output>

<result>20</result>