Answer: IT would be $79.68 for the window frame.
Explanation:
since the cost for one side that is 24 inches long is $0.83
the square window will have 4 equal sides of the same length
hence we will multiply 24 by 4
i.e.,24*4=96
now we know that the cost of one side is $0.83
so the cost for 4 sides of 24 inches each will be
$0.83*96=$79.68