The circumference of a circle is 12.56 cm. To draw this circle, how many centimeters should be the distance between the two feet of the compass.
一个圆的周长是12.56厘米，要画出这个圆，圆规两脚间的距离应该取多少厘米．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<result>2</result>