SOLUTION: The length of a rectangle is 4 feet longer than its width. If the area is 396 ft^2, find the length and width.

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Question 1046832: The length of a rectangle is 4 feet longer than its width. If the area is 396 ft^2, find the length and width.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

     .

The length of a rectangle is 4 feet longer than its width highlight%28w%29

A = Lw

396ft^2 = (w + 4)w

w^2 + 4w - 396 = 0

(w+22)(w-18)

w = 18ft, L = 22ft



AND

18ft*22ft = 396 ft^2 CHECKS!