SOLUTION: A rectangle is twice as wide as it is long. If the area is 800 square meters, what are the dimensions of the rectangle?

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Question 291111: A rectangle is twice as wide as it is long. If the area is 800 square meters, what are the dimensions of the rectangle?
Answer by brucewill(101) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = one side of the rectangle.
therefore, 2x = other side of the rectangle.
Area is the product of the 2 sides.
x%282x%29+=+800
2x%5E2+=+800
x%5E2+=+400
highlight%28x+=+20%29 (disregard the negative answer).
The second side would be 40.
To check: 20 * 40 = 800. OK.