There is a clock, the minute hand is 8cm long, how many centimeters is the distance traveled by the tip of the minute hand in one circle?
有一个时钟，分针长8cm，这根分针走一圈，针尖走过的路程是多少厘米？
<gadget id="calculator">3.14 * 8 * 2</gadget>
<output>50.24</output>

<result>50.24</result>