SOLUTION: What is the maximum total area that 450cm of string can enclose if it is used to form the perimeters of two adjoining rectangles?

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Question 912002: What is the maximum total area that 450cm of string can enclose if it is used to form the perimeters of two adjoining rectangles?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
Two adjoining rectangles make one larger rectangle. So the question really is what is the largest rectangle that can be enclosed with 450cm of string. The largest area is that closest to a square.
450/4 = 112.5cm
112.5 * 112.5 = area of 12,656.25 sq cm
The adjoining rectangles have a length of 112.5cm. Their widths can be any measurement so that the width of A plus the width of B = 112.5 cm.