The minute hand of a clock is 10 cm long, how many centimeters does the tip of the minute travel from 2:00 pm to 6:00 pm.
一个时钟的分针长10厘米，从下午2点到6点，分钟的尖端走了多少厘米．
<gadget id="calculator">2 * 3.14 * 10 * 4</gadget>
<output>251.2</output>

<result>251.2</result>