Question 333855
{{{A=s^2}}} Start with the area of a square formula.



{{{sqrt(A)=s}}} Take the square root of both sides (note: we're only taking the positive square root since a negative length doesn't make sense).



{{{s=sqrt(A)}}} Flip the equation.



{{{s=sqrt(144)}}} Plug in {{{A=144}}} (the given area).



{{{s=12}}} Take the square root of {{{144}}} to get {{{12}}}.



So if a square has an area of {{{144}}} square inches, then it has a side length of {{{12}}} inches.


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{{{P=4s}}} Now move onto the perimeter of a square formula.



{{{P=4(12)}}} Plug in {{{s=12}}}.



{{{P=48}}} Multiply {{{4}}} and {{{12}}} to get {{{48}}}.



So the perimeter of a square with a side length of {{{12}}} inches is {{{48}}} inches.



This means that if a square has an area of 144 square inches, this means that has a perimeter of 48 inches.