There is a circular flower bed with a circumference of 125.6m. A cobblestone path with a width of 1m is built outside the flower bed. What is the area of the path?
有一圆形花坛，周长125.6m，在花坛外修一条1m宽的鹅卵石小路，求小路的面积是多少？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">125.6 / 6.28</gadget>
<output>20</output>

<gadget id="calculator">20 + 1</gadget>
<output>21</output>

<gadget id="calculator">21 ** 2</gadget>
<output>441</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">441 - 400</gadget>
<output>41</output>

<gadget id="calculator">3.14 * 41</gadget>
<output>128.74</output>

<result>128.74</result>