Question

please answer it....​

Answer 1

perimeter of square = 4a

circumference of circle = 2πr

ATQ,

4a = 2πr

2a = 22/7 X r

 a = 11r/7

 area of square = a²

                        = 11r/7 X 11r/7

                        = 144r²/49

 area of circle   = πr²

 Ratio of area of square  & area of circle is ,

               144 r²/49 : 22/7 r²

                    11/ 7 : 2

                          11 : 14

Answer 2

Answer:

$4a=2\pi r$

$a=\frac{\pi r}{2}$

Squaring on both sides, we get

$a^2=(\frac{\pi r}{2})^2$

$a^2=\frac{\pi (\pi r^2)}{2}$

Square area = $\frac{\pi}{2}$*Area of circle.