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  1. The radius of a circle is a side of a square. The ratio of the area of the circle and the square is
    1. 1 : π
    2. π : 1
    3. π : 2
    4. 2 : π
Correct Option: B

Using Rule 10 and 14,
Radius of circle = Side of square = r units
⇒ Area of circle : Area of square = πr² : r²
= π : 1


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