The perimeter of a square is equal to the perimeter of a rectangle. It is known that the perimeter of a rectangle is 24 decimeters. What is the side length of a square in decimeters?
一个正方形的周长等于一个长方形的周长，已知长方形的周长是24分米，正方形的边长是多少分米．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<result>6</result>