There is a circular path around the circular flower bed. The diameter of the flower bed is 8 meters, and the width of the path is 2 meters. How many square meters does this circular path occupy?
圆形花坛周围有一条环形小路，花坛直径8米，小路宽2米，这条环形小路占地多少平方米？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

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

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

<gadget id="calculator">36 - 16</gadget>
<output>20</output>

<gadget id="calculator">3.14 * 20</gadget>
<output>62.8</output>

<result>62.8</result>