This isn't English this is math! Why put it under English?
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The way was Ralph Waldo Emerson important in Henry David Thoreau's professional life is <span>Emerson was the one who paid Thoreau's poll tax, which freed him from prison.</span>
Divide the area by the width (or the number that the problem gave you). So 635.4/18. This will give you the length because of the formula
length x width = area (formula for the area of a rectangle). So in this case the answer should be 35.3
If you want to check your work just multiply the width by the length. 35.3x18= 635.4