The diameter of the garden in the center of the street is 5 meters. If a circular road with a width of 1 meter is built around it, what is the actual area of the road in square meters? Among them, take 3.14 for π.
街心花园的直径是5米，现在它的外部周围修一条1米宽的环形路，则路面的实际面积为多少平方米．其中π取3.14．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) + 1</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">(7/2) ** 2</gadget>
<output>49/4 = around 12.25</output>

<gadget id="calculator">3.14 * (49/4)</gadget>
<output>38.465</output>

<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">3.14 * (25/4)</gadget>
<output>19.625</output>

<gadget id="calculator">38.465 - 19.625</gadget>
<output>18.84</output>

<result>18.84</result>