Put three squares of equal area into a rectangle. The perimeter of this rectangle is 24 decimeters. What is the area of each square in square meters?
把三个面积相等的正方形，拼成一个长方形，这个长方形周长是24分米，每个正方形的面积是多少平方米．
<gadget id="calculator">24 / 8</gadget>
<output>3</output>

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

<result>9</result>