Xiaojia surrounded a rectangle with a 31.2 cm long ribbon, and its length was three times its width. What are the length and width of the rectangle formed? (The perimeter of a rectangle is equal to how many times the sum of its length and width.
小佳用一根长31.2厘米的彩带围成了一个长方形，它的长是宽的3倍，围成的这个长方形的长和宽各是多少？(长方形的周长等于长与宽的和的多少倍．
<result>2</result>