There is a circular flowerbed with a diameter of 10 meters in the park, surrounded by a path with a width of 2 meters. What is the area of the trail? (The result keeps π)
公园里有一个直径为10米的圆形花圃，在它的周围环绕着一条2米宽的小道．求小道面积是多少？(结果保留π)
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

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

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">49 - 25</gadget>
<output>24</output>

<result>24</result>