If the circumference of a circle is 12.56 centimeters, what is the distance in centimeters between the two feet of the compass when drawing the circle?
一个圆的周长是12.56厘米，则画这个圆时圆规两脚间的距离是多少厘米．
<gadget id="calculator">12.56 / 6.28</gadget>
<output>2</output>

<result>2</result>