If you want to draw a circle with a circumference of 50.24 cm, what is the distance between the two feet of the compass in cm?
如果要画一个周长为50.24厘米的圆，那么圆规两脚间的距离应该取多少厘米．
<gadget id="calculator">50.24 / 3.14 / 2</gadget>
<output>8</output>

<result>8</result>