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The rectangle, which encloses the maximum area at given perimeter, is a square,
and its size is the quarter of the given perimeter, i.e. = 37.5 meters. ANSWER
Solved.
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On rectangle enclosing the maximum area, see the lessons
- A rectangle with a given perimeter which has the maximal area is a square
- A farmer planning to fence a rectangular garden to enclose the maximal area
in this site.