The minute hand of a wall clock is 10 cm long. From 10 o'clock to 12 o'clock, how many square centimeters does the minute hand sweep?
一只挂钟的分针长10厘米，从10时到12时，分针扫过的面积是多少平方厘米？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100 * 2</gadget>
<output>628</output>

<result>628</result>