The hour hand of the clock on the clock tower is 0.8 meters long. What is the distance traveled by the tip of the hour hand after 12 hours?
钟楼上时钟的时针长0.8米，经过12小时时针尖端走过的路程是多少米．
<gadget id="calculator">3.14 * 0.8 * 2</gadget>
<output>5.024</output>

<result>5.024</result>