It would depend on the shape that you are asking about. Also, only special shapes could express area as a function of the perimeter.
Example: a square: area = s2, where s is the length of a side. Perimeter of a square is 4*s.
So if P (for perimeter) = 4 * s, then s = P/4,
and A (for area) = s2 = (P/4)2 = P2/16
But for a rectangle that is not a square, there is no relationship between area and perimeter.
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To find the perimeter you add and to find the area we multiply.
Perimeter minus two times the width will give you the two times the length. Area is found by multiplying the length by the width.
Perimeter = 2*Area/Apothem.
you divide the area by four and now you can find the perimeter
Perimeter = 4*Side so that Side = Perimeter/4 Area of a rhombus = Side * Altitude so Altitude = Area/Side = Area/(Perimeter/4) = 4*Area/Perimeter