Question 1123106
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First square side is  {{{sqrt(125)}}} = {{{5*sqrt(5)}}} ft.

    Its perimeter is  {{{20*sqrt(5)}}} ft.


Second square side is  {{{sqrt(505)}}} = {{{9*sqrt(5)}}} ft.

    Its perimeter is  {{{36*sqrt(5)}}} ft.


The difference of perimeters is {{{16*sqrt(5)}}} ft.   Answer A).
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Solved.