There is a clock with a minute hand 12 cm long. How many centimeters is the distance traveled by the tip of the minute hand in one revolution?
有一个时钟，分针长12厘米．这根分针走一圈，针尖走过的路程是多少厘米？
<gadget id="calculator">3.14 * 12 * 2</gadget>
<output>75.36</output>

<result>75.36</result>