There is a circular fountain with a radius of 6cm in the park, and a gravel road with a width of 2m is built along its periphery. What is the area of this gravel road in square meters?
公园里有一个半径是6cm的圆形喷水池，沿着它的外围修了一条宽2m的石子路．这条石子路的面积是多少平方米？
<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

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

<gadget id="calculator">64 - 36</gadget>
<output>28</output>

<gadget id="calculator">3.14 * 28</gadget>
<output>87.92</output>

<result>87.92</result>