SOLUTION: The length of a rectangle is 4 Meters longer than the width. If the area is 8 square meters, find the rectangle's dimensions. Round to the nearest tenth of a meter

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is 4 Meters longer than the width. If the area is 8 square meters, find the rectangle's dimensions. Round to the nearest tenth of a meter      Log On


   

Question 535995: The length of a rectangle is 4 Meters longer than the width. If the area is 8 square meters, find the rectangle's dimensions. Round to the nearest tenth of a meter
Answer by Math_prodigy(24) About Me  (Show Source):
You can put this solution on YOUR website!
l=w+4
A=w*l
A=w*(w+4)
8=w*(w+4)
8=w^2+4w
w^2+4w-8=0
x+=+%28-4+%2B-+sqrt%28+4%5E2-4%2A1%2A%28-8%29+%29%29%2F%282%2A1%29+
w=1.464=1.5
l=1.5+4=5.5