SOLUTION: The length of a rectangular hall is twice its width.if its area is 800 metre cube fine the length of the hall

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Question 1038730: The length of a rectangular hall is twice its width.if its area is 800 metre cube fine the length of the hall
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
L=2w
w(2w)=800
2w^2=800
w^2=400
w=20
L=40
The hall is 20 meters by 40 meters!!!!!!!!!!!!!!