The diameter of a circular flower bed is 16 meters, and a 2-meter-wide cement road is built around the flower bed. What is the area of this cement road in square meters?
圆形花坛的直径是16米，绕花坛周围修一条2米宽的水泥路，这条水泥路的面积是多少平方米？
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

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

<gadget id="calculator">100 - 64</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36</gadget>
<output>113.04</output>

<result>113.04</result>