SOLUTION: perimeter of rectangle is 80 m. if its length exceeds its breath by 4 m finds its area?

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Question 547732: perimeter of rectangle is 80 m. if its length exceeds its breath by 4 m finds its area?
Answer by mathie123(224)   (Show Source): You can put this solution on YOUR website!
Let l be the length, and w be the width. From the question we know:
(1)
and
(2)
Substituting (1) into (2) we get:






Substituting this value of w into (1) we get that

Now, the formula for area is as follows:



Therefore the area is 396 metres squared.

Hopefully this helps! Just let me know if you are still unsure


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