Draw a circle with a circumference of 18.84 cm, what is the distance between the two feet of the compass in cm
画一个周长为18.84厘米的圆，圆规两脚之间的距离应是多少厘米
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<result>3</result>