If a square is inscribed in a circle, find the ratio of the areas of the circle and the square.
When a square inscribed in a circle then,
Diameter of circle = diagonal of square
Let side of the square be = a cm
Diagonal of square be =
Area of square = a2 cm2
Diameter of circle = 
؞ radius of circle = 
Area of circle = 
Ratio of area of circle and square = 
= π : 2
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