A circular pool has a diameter of 10 meters. A path with a width of 2 meters is built along the side of the pool. What is the area of this path in square meters?
一个圆形水池，直径是10米，沿着水池边修一条宽2米的小道，这条小道的面积是多少平方米？
<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>

<gadget id="calculator">3.14 * 24</gadget>
<output>75.36</output>

<result>75.36</result>