If the distance between the two feet of a compass is 6 cm, what is the circumference of the drawn circle in cm?
要画一个圆规两脚间的距离是6厘米，画出的圆周长是多少厘米？
<gadget id="calculator">3.14 * 6 * 2</gadget>
<output>37.68</output>

<result>37.68</result>