The minute hand of a wall clock is 6 cm long. From 9 o'clock to 10 o'clock, how many square centimeters does the minute hand sweep?
一个挂钟的分针长6厘米，从9时到10时，分针扫过的面积是多少平方厘米？
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<result>113.04</result>