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Define x :
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Let the width be x.
Width = x
Length = 2x
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Find x :
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2( x + 2x) = 180
2(3x) = 180
6x = 180
x = 30
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Find Length and Width:
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Width = x = 30 feet
Length = 2x = 2(30) = 60 feet
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Answer: The length is 60 ft and the width is 30 ft.
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