The circumference of the circular flower bed in the garden in the middle of the street is 18.84 meters. What is the area of the flower bed in square meters?
街心花园中圆形花坛的周长是18.84米，花坛的面积是多少平方米？
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">18.84 / 6.28</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<result>28.26</result>