SOLUTION: Solve The width of a rectangular picture is one-half its length. If it's area is 648 in.^2, what are the dimensions of the picture?

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Question 1034637: Solve
The width of a rectangular picture is one-half its length. If it's area is 648 in.^2, what are the dimensions of the picture?

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Okay...the area of a rectangle is given by
A = LW
We know that W = (1/2)L or L = 2W.
Plugging in we have
648 = (2W)(W)
2W^2 = 648
W^2 = 324
W = 18 inches so that
L = 36 inches