The perimeter of a square lawn is 24 meters. What is the area of the lawn in square meters?
一块正方形草坪的周长是24米．这块草坪的面积是多少平方米？
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>