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Sum of areas tangent to three circles

1750AdeptCoordinate GeometryGeometry

AMC 12B · 2022 · Problem 21

Let $S$ be the set of circles in the coordinate plane that are tangent to each of the three circles with equations $x^{2}+y^{2}=4$, $x^{2}+y^{2}=64$, and $(x-5)^{2}+y^{2}=3$. What is the sum of the areas of all circles in $S$?

Answer choices

A
48 \pi
B
68 \pi
C
96 \pi
D
102 \pi
E
136 \pi
0 students attempted0% solvedRating 1750

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