The minute hand of a wall clock is 6 cm long. What is the distance traveled by the tip of the minute hand after 60 minutes?
一只挂钟的分针长6厘米，经过60分钟，分针的尖端走的距离是多少厘米．
<gadget id="calculator">2 * 3.14 * 6</gadget>
<output>37.68</output>

<result>37.68</result>