The minute hand of a clock is 10 cm long. If the hour hand moves from 2 o'clock to 4 o'clock, how many centimeters does the tip of the minute hand travel around the center?
一个钟表的分针长10厘米，若时针从2时走到4时，则分针的针尖绕中心走过了多少厘米
<gadget id="calculator">2 * 3.14 * 10 * 2</gadget>
<output>125.6</output>

<result>125.6</result>