Hi

The sum of the length l and the width w of a rectangular area is 260 meters. 

(a) Write w as a function of l.

 w = 260 - l

 (b) Write the area A as a function of l.

 A = l(260-l)

 (c) Find the dimensions that produce the greatest area. (When rectangle is a Square)

 l = 130 m

 w = 130 m

for Ex:  and 

  

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