Minima problem?
This is a question in my textbook which I can't solve. Any help would be
appreciated, thanks.
"A piece of wire 10 metres long is cut into two portions. One piece is
bent to form a circle, and the other piece to form a square. Find the
circumference of the circle if the sum of areas of the circle and square
is to be a minimum. Give your answer in terms of $pi$."
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