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
$$\begin{gathered} \frac{r}{s}=\frac{4}{2\pi } \\ \frac{r}{s}=\frac{2}{\pi } \end{gathered}$$
$$\begin{gathered} \frac{r}{s}=\frac{2}{{\displaystyle \frac{22}{7}}} \\ \frac{r}{s}=\frac{2\times 7}{22} \\ \frac{r}{s}=\frac{7}{11} \end{gathered}$$
Hence the ratio of radius of circle to side of square is r:s=7:11.
Regards