The minute hand of a quartz clock is 15 cm long. How many centimeters does the tip of the minute hand travel when it rotates for 1 hour?
石英钟的分针长15厘米，该分针转动1小时后，它的尖端走过的路程是多少厘米？
<gadget id="calculator">2 * 3.14 * 15</gadget>
<output>94.2</output>

<result>94.2</result>