SOLUTION: The length of a rectangle is 4 feet more than 3 times the width. If the area is 64 square feet, find the width and the length.

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Question 929907: The length of a rectangle is 4 feet more than 3 times the width. If the area is 64 square feet, find the width and the length.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

     .

A = Lw

64ft^2 = (3w+4)w

3w^2 + 4w - 64 = 0 (tossing out negative solution for unit measure)

(3w +16)(w -4)= 0

w = 4ft  and L = 16ft 3%2A4+%2B+4

and...checking

A = Lw = 64ft^2