the length of a Rectangle is 3 m less than double the width, and the area of the rectangle is 14 m. Find the dimensions of the rectangle

Answer 1

L = 2W -3

A = 14 = LW = (2W-3)W = 2W^2 -3W

2W^2 -3W -14 = 0

W = 3/4 + or - (1/4)sqr(9 +112)

W = 3/4 + 11/4 = .75 + 2.75 = 3.5 meters wide

L = 7 - 3 = 4 meters long