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Since length is 3m more than thrice it's width. Length is (3x+3) while x is the width. Area of rectangle is (3x+3)x from lengthxwidth Equate that to 65. So (3x+3)x=65 solving for x gives you 4.18. If x is 4.18 length is 15.54 and width is 4.18. The perimeter is 2(15.54)+2(4.18)=39.44
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