A square is surrounded by an iron wire, and the side length is 8 decimeters. If the iron wire is used to form a rectangle, what is the perimeter of the rectangle?
用一根铁丝围成一个正方形，边长是8分米，如果把这根铁丝围成一个长方形，这个长方形的周长是多少分米．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>