SOLUTION: a rectangle's length is equal to eight times its width.if the area of the rectangle is 392 square inches, what is the width of the rectangle?

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Question 328561: a rectangle's length is equal to eight times its width.if the area of the rectangle is 392 square inches, what is the width of the rectangle?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=8W
A=LW
392=8W*W
392=8W^2
8W^2=392
W^2=392/8
W^2=49
W=SQRT49
W=7 ANS.
L=8*7=56 ANS.
PROOF:
392=7*56
392=292