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A rectangle has its length 9 times its width. What is the ratio of its perimeter to the perimeter of the square of the same area?



Let bredth of rctngle=b
then length = 9b.
area=l*b =9b * b = 9 b^{2}
then perimeter = 2(9b + b)=20b

if it area of square then side of square is= a^{2} =9 b^{2}

then its perimeter = 4.3b = 12b

ratio of perimeter=

rectangle : square

hence ratio is 5:3

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