Use a compass to draw a semicircle with a circumference of 10.28 cm. What is the distance between the two feet of the compass in cm?
用圆规画一个周长10.28厘米的半圆，那么圆规两脚之间的距离应是多少厘米．
<gadget id="calculator">10.28 / 5.14</gadget>
<output>2</output>

<result>2</result>