Two tanget circles $A$ and $B$ have radii $r1$ and $r2,$ respectively. What is the distance between their

Two circles $A$ and $B$ have radii $r1$ and $r2,$ respectively. What is the distance between their centers?

1) $r1=3\,\text{inches}$
2) $r2=5\,\text{inches}$

OA E

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