The minute hand of a clock is 8 cm long. From 2 o'clock to 3 o'clock, what is the area swept by the minute hand in cm**2.
一个钟表的分针长8厘米，从2时走到3时，分针扫过的面积是多少厘米**2．
<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64</gadget>
<output>200.96</output>

<result>200.96</result>