A flower bed has a diameter of 6 meters, and there is a circular cobblestone path with a width of 1 meter around it. What is the area of the path in square meters?
一个花坛，直径6米，在它周围有一条宽1米的环形鹅卵石小路，小路的面积是多少平方米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

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

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

<gadget id="calculator">16 - 9</gadget>
<output>7</output>

<gadget id="calculator">3.14 * 7</gadget>
<output>21.98</output>

<result>21.98</result>