The hour hand of a wall clock is 10 centimeters long, how many centimeters does the top of the hour hand move after one day and night?
一挂钟的时针长10厘米，经过一昼夜时针的顶端走多少厘米？
<gadget id="calculator">2 * 3.14 * 10 * 2</gadget>
<output>125.6</output>

<result>125.6</result>