( 3r )2 is a fraction of 9r2
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9 as a fraction = 9/1
9 is an integer and not a fraction.
9 percent to a fraction = 9/100 9% = 9%/100% = 9/100 in fraction
It ultimately depends on the areas of the two shapes: Acircle = pi*r2 Asquare = l2 Fraction shaded = Acircle / Asquare = pi*r2/ l2 If the circle fills the square (e.g. l=2r) then the formula simplifies considerably: pi*r2/4r2 = pi/4
0.09 as a fraction = 9/1000.09 * 100/100 = 9/100 in fraction