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Let the length be (1/2x+7) and the width be x:

Perimeter = 2(length+width) = 134

2(1/2x+7+x) = 134

Multiply out the brackets:

x+14+2x = 134

Collect like terms and subtract 14 from both sides:

3x = 120

Divide both sides by 3:

x = 40

Therefore: length = 27 meters and width = 40 meters

Check: 27+27+40+40 = 134 meters

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