SOLUTION: the length of a rectangle is twice the width. the area is 392 yd^2. find the length and the width

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: the length of a rectangle is twice the width. the area is 392 yd^2. find the length and the width      Log On


   

Question 341742: the length of a rectangle is twice the width. the area is 392 yd^2. find the length and the width
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=2W
A=LW
392=2W*W
2W^2=392
W^2=392/2
W^2=196
W=SQRT196
W=14 ANS. FOR THE WIDTH.
L=2*14=28 ANS. FOR THE LENGTH.
PROOF:
392=28*14
392=292