On a wall clock, the hour hand on the face of the clock is 5 cm long. How many centimeters does the tip of this clock trace for a week and night?
一个挂钟，钟面上的时针长5厘米．这根时钟的尖端一周夜所划过的路线，一共有多少厘米？
<gadget id="calculator">3.14 * 5 * 2 * 2</gadget>
<output>62.8</output>

<result>62.8</result>