expert please give me the answers fast.

Dear student,
Let the radius of the circular frame be r and side of square frame be s.
The circular frame is converted into a square frame. 
So, circumference of circle = perimeter of square
Formula: circumference of circle  = 2πr, perimeter of square = 4s

2πr = 4s
Hence the ratio of radius of circle to side of square is r:s=7:11.

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