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In circle A as shown below, segment DC is tangent to circle A at D. Also, DC = 4 and BC = 2
Find the length of the radius of circle A
A. 3
B. 5
C. 6
D. 12

please help!!!

In Circle A As Shown Below Segment DC Is Tangent To Circle A At D Also DC 4 And BC 2 Find The Length Of The Radius Of Circle A A 3 B 5 C 6 D 12 Please Help class=