SOLUTION: A rectangle has a perimeter of 100cm. Find the greatest possible area for the rectangle using quadratic functions.

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Question 1170333: A rectangle has a perimeter of 100cm. Find the greatest possible area for the rectangle using quadratic functions.
Found 2 solutions by ikleyn, Clanther:
Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.

A rectangle with a given perimeter which has the maximal area is a square.'


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    - A rectangle with a given perimeter which has the maximal area is a square
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Answer by Clanther(6) About Me  (Show Source):
You can put this solution on YOUR website!
2l+2w=100
2(25)+2w=100
50+2w=100
2w=100-50
2w/2=50/2
w=25
A=lw
=25(25)
A=625cm²