SOLUTION: 1) The lenght of a rectangle is 4 meters less than twice the width. If the area of the rectangle is 286 square meters, find the dimensions.

Algebra ->  Rectangles -> SOLUTION: 1) The lenght of a rectangle is 4 meters less than twice the width. If the area of the rectangle is 286 square meters, find the dimensions.       Log On

 

Hi,

     .

(2w-4)w = 286

 2w^2 - 4w - 286 = 0

 w^2 - 2w - 143 = 0  

(w-13)(w+11) = 0 (Tossing out the negative solution for unit measure)

w = 13m  and L = 22m

And...