The radius of the circular flower pond on campus is 6 meters. A cement road with a width of 1 meter is built around the flower pond. What is the area of the cement road in square meters?
校园圆形花池的半径是6米，在花池的周围修一条1米宽的水泥路，水泥路的面积是多少平方米．
<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<gadget id="calculator">7 ** 2</gadget>
<output>49</output>

<gadget id="calculator">3.14 * 49</gadget>
<output>153.86</output>

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

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

<gadget id="calculator">153.86 - 113.04</gadget>
<output>40.82</output>

<result>40.82</result>