The minute hand of a clock is 10 cm long. From 2 o'clock to 3 o'clock, how many centimeters does the minute hand travel?
一个钟表的分针长10cm，从2时走到3时，分针走过了多少cm．
<gadget id="calculator">2 * 3.14 * 10</gadget>
<output>62.8</output>

<result>62.8</result>