A rectangular piece of land with an area of 0.6 hectares has a length of exactly 100 meters. Now it is necessary to enclose the largest square flower garden in this field. How many square meters is the area of this square flower garden?
一块面积是0.6公顷的长方形土地，它的长正好是100米．现在要在这块地里围一个最大的正方形花圃，这个正方形花圃的面积有多少平方米？
<gadget id="calculator">10_000 / 100</gadget>
<output>100</output>

<gadget id="calculator">0.6 * 100 * 0.6 * 100</gadget>
<output>3_600</output>

<result>3_600</result>