The radius of a circular flower bed is 3 meters, and there is a circular path of equal width around the flower bed, and the outer circumference of the path is 37.68 meters. What is the area of this circular path in square meters?
一个圆形花坛的半径是3米，花坛周围有一条等宽的环形小路，小路的外周长是37.68米．这条环形小路的面积是多少平方米？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">37.68 / 6.28</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

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

<gadget id="calculator">36 - 9</gadget>
<output>27</output>

<gadget id="calculator">3.14 * 27</gadget>
<output>84.78</output>

<result>84.78</result>