Outside a circular flower bed with a radius of 3 meters, a circular path with a width of 1 meter surrounds it. What is the area of this circular path in square meters?
在一个半径为3米的圆形花坛外，围绕着一条宽1米的环形小路．这条环形小路的面积是多少平方米？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">50.24 - 28.26</gadget>
<output>21.98</output>

<result>21.98</result>