The minute hand of a wall clock is 5 cm long. From 8 am to 4 pm, what is the distance traveled by the tip of the minute hand?
一个挂钟的分针长5厘米，从上午8点到下午4点，分针针尖走过的距离是多少厘米？
<gadget id="calculator">2 * 3.14 * 5 * 8</gadget>
<output>251.2</output>

<result>251.2</result>