SOLUTION: The are of a rectangle is 128cm^2. If the length is twice as long as the width, what is the length of the rectangle?

Algebra ->  Square-cubic-other-roots -> SOLUTION: The are of a rectangle is 128cm^2. If the length is twice as long as the width, what is the length of the rectangle?      Log On


   

Question 893295: The are of a rectangle is 128cm^2. If the length is twice as long as the width, what is the length of the rectangle?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
A=L%2AW
L%2AW=128
In this case,
L=2W
Then,
2W%2AW=128
W%5E2=64
W=8cm
Then,
L=16cm