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How many square units are in the greatest area that can be enclosed by a rectangle whose perimeter is 20 units?
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How many square units are in the greatest area that can be enclosed by a rectangle whose perimeter is 20 units?

User Damir Miladinov
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In order to have a greatest rectangle, it has to be a square. Because the perimeter is 20 units, the length of 1 side of the rectangle is 20:4=5. Thus, there are 5*5= 25 units could be enclosed in the rectangle. Feel free to ask more :))
User Yuval Simhon
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