SOLUTION: If the area if a rectangle is 143 sq feet and the perimeter is 48 feet, what are the dimensions?

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Question 426907: If the area if a rectangle is 143 sq feet and the perimeter is 48 feet, what are the dimensions?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Lw=A, 2(L+w)=P
Lw=143
2(L+w)=48
L+w=24
L=24-w
w(24-w)=143
-w^2+24w=143
w^2-24w=-143
w^2-24w+143=0
(w-13)(w-11)=0
w=11, L=13 or vice versa.
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Ed