Hello

See here http://www.mathhelpforum.com/math-he...n-problem.html for a similar problem.

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Let m be the length of the wire that will be transformed into a square.

Then, d-m will be the length of the wire that will be transformed into a circle.

The perimeter of the square is m. Therefore, one side of the square is long.

The area is known to be the square of the side, that is to say :

The perimeter of the circle is d-m. We know that the perimeter of a circle is .

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The area of a circle is

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2 areas are combined :

m is the variable