A square flower bed has a perimeter of 25.2 meters. What is the area of this flower bed?
一个正方形的花坛，周长是25.2米．这个花坛的面积是多少？
<gadget id="calculator">25.2 / 4</gadget>
<output>6.3</output>

<gadget id="calculator">6.3 * 6.3</gadget>
<output>39.69</output>

<result>39.69</result>