The minute hand of a clock is 10 cm long, how many cm does the minute hand travel from 2 o'clock to 5 o'clock.
一个钟表的分针长10cm，从2时走到5时，分针走过了多少cm．
<gadget id="calculator">3.14 * 10 * 2 * 3</gadget>
<output>188.4</output>

<result>188.4</result>