The square which is made in a circle such that all four vertices of a square touches circle is called Circumscribed square.
By Pythagoras theorem in triangle BOC
s2 = r2 + r2
s = √2r
|Areas||In terms of radius ‘r’||In terms of side ‘s’|
|Area of square ABCD with side ‘s’||2 r2||s2|
|Area of circle with radius ‘r’||∏ r2||∏ s2 /2|