The minute hand of a clock is 6 cm long. From 5:20 to 6:00, how many centimeters does the tip of the minute hand travel?
一个钟表的分针长6厘米，从5：20到6：00，分针的尖端走了多少厘米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2 * 3.14 * 6 * (2/3)</gadget>
<output>25.12</output>

<result>25.12</result>