The minute hand of a wall clock is 10 cm long. From 9 am to 2:30 pm, how many centimeters does the tip of the minute hand travel?
一个挂钟的分针长10cm，从上午9时到下午2时半，分针针尖走过的路程是多少厘米？
<gadget id="calculator">2 * 3.14 * 10 * 5.5</gadget>
<output>345.4</output>

<result>345.4</result>