The minute hand of a clock is 10 cm long, what is the distance traveled by the tip of the minute hand after 1 hour?
一只挂钟的分针长10厘米，经过1小时后，分针的尖端所走的路程是多少厘米．
<gadget id="calculator">3.14 * 10 * 2</gadget>
<output>62.8</output>

<result>62.8</result>