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The scale factor of the first circle with radius 9 in to that of the second circle with diameter 6 in is 3.00
The scale factor of a circle to another is the ratio of their radii
Radius of the first circle = 9 in
Diameter of the second circle = 6 in
Radius = Diameter / 2
Radius of the second circle = 6 / 2
Radius of the second circle = 3 in
Scale factor = (Radius of the first circle) / (Radius of the second circle)
Scale factor = 9/3
Scale factor = 3.00 (2 decimal places)
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