Geometry
posted by Maria .
A 60 degree arc, of circle A, has exactly the same lenght as a 45 degree arc, of circle B. Find the ratio of the radius of circle A to the radius of circle B

Geometry 
Henry
Ar/Br = 45/60 = 3/4.
Ar = Radius of circle A.
Br = Radius of circle b.
Circle A is the smaller circle.
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