A circle and a square have equal areas. The ratio of a side

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A circle and a square have equal areas. The ratio of a side of the square and the radius of the circle is

Using Rule 10 and 14,
Let the radius of circle be r units and the side of square be x units, then
x² = πr²

⇒	x²	=	π	⇒	x	=	√π	or √π : 1
	r²		1		r		1