Please help me with this problem :)
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The perimeter of the rectangle is the sum of its dimensions
The dimensions that minimize the perimeter are
The area is given as:
Let the dimension be x and y.
So, we have:
Make x the subject
The perimeter is calculated as:
Substitute
Expand
Differentiate
Set to 0
Rewrite as:
Divide both sides by -1
Multiply y^2
Divide by 2
Take square roots of both sides
Substitute in
Hence, the dimensions that minimize the perimeter are
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