A watch from 9 am to 11 am, the distance traveled by the tip of the minute hand is 12.56 cm, how long is the minute hand in cm?
一只手表从上午9时到11时，分针的针尖走过的路程长12.56cm，分针长多少cm．
<gadget id="calculator">12.56 / 2 / 3.14 / 2</gadget>
<output>1</output>

<result>1</result>