The minute hand of a clock is 10 cm long, what is the distance traveled by the tip of the minute hand in 3 hours?
一个钟表的分针长10厘米，它3小时后分针尖端走过的路程是多少厘米？
<gadget id="calculator">2 * 3.14 * 10 * 3</gadget>
<output>188.4</output>

<result>188.4</result>