Circle $A$ has a radius of $3n$ and circle $B$ has a radius of $129n$, where $n$ is a positive constant. The area of circle $B$ is how many times the area of circle $A$?

MM

Mashaal Masha

Mar 01, 2024

Circle $A$ has a radius of $3n$ and circle $B$ has a radius of $129n$, where $n$ is a positive constant. The area of circle $B$ is how many times the area of circle $A$?

Difficulty: Hard

A:

43

B:

86

C:

129

D:

1,849

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ID: 65e2447077077994e5cfa6fa