SOLUTION: The length of a rectangle has the double of its wide more four meters. If the total area is 336 m2 , What are its measures? please, would you like help me? .

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: The length of a rectangle has the double of its wide more four meters. If the total area is 336 m2 , What are its measures? please, would you like help me? .       Log On


   

Question 351760: The length of a rectangle has the double of its wide more four meters. If the total area is 336 m2 , What are its measures? please, would you like help me? .
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The length of a rectangle has the double of its wide more four meters. If the total area is 336 m2 , What are its measures?
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Let the width be "x".
Then the length is 2w+4.
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Area = length*width
336 = (2w+4)*w
2w^2 + 4w - 336 = 0
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w^2 + 2w - 168 = 0
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Factor:
(w+14)(w-12) = 0
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Usable Answer:
width = 12
length = 2w+4 = 28
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Cheers,
Stan H.
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