The circumference of a circle is 25.12 centimeters. When the circle is drawn with a compass, what is the distance between the two feet of the compass in centimeters?
一个圆的周长是25.12厘米，用圆规画这个圆时，圆规两脚之间的距离是多少厘米．
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<result>4</result>