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Answer :

We have the next area ratio

[tex]256\colon361[/tex]

In order to know the perimeter ratio we need to calculate the square root of each number

[tex]\begin{gathered} \sqrt[]{256}=16 \\ \sqrt[]{361}=19 \end{gathered}[/tex]

Therefore the perimeter ratio is

[tex]16\colon19[/tex]

ANSWER

16:19