There is a circular fish pond with a diameter of 15 meters. A path with a width of 2 meters is built along the edge of the pool. What is the area of the path in square meters (take 3.14 for π)
有一个圆形鱼池，直径15米，紧沿着池边修一条宽2米的小道，小道面积是多少平方米(π取3.14)
<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">(15/2) + 2</gadget>
<output>19/2 = around 9.5</output>

<gadget id="calculator">(19/2) ** 2</gadget>
<output>361/4 = around 90.25</output>

<gadget id="calculator">(15/2) ** 2</gadget>
<output>225/4 = around 56.25</output>

<gadget id="calculator">(361/4) - (225/4)</gadget>
<output>34</output>

<gadget id="calculator">3.14 * 34</gadget>
<output>106.76</output>

<result>106.76</result>