Question 623721
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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: {{{130*130 = 16900}}} and {{{160*100 = 160000}}}