The perimeter of the circular fountain in front of the Mayfair Hotel is 28.26m. How many square meters does the circular fountain cover?
美佛儿宾馆前圆形喷泉周长是28.26m，圆形喷泉占地面积是多少平方米？
<gadget id="calculator">28.26 / 3.14 / 2</gadget>
<output>4.5</output>

<gadget id="calculator">3.14 * 4.5 * 4.5</gadget>
<output>63.585</output>

<result>63.585</result>