Question

$C_1$ is a circle with centre at the origin and radius equal to $r$ and $C_2$ is a circle with centre at $(3r,0)$ and radius equal to $2r$. The number of common tangents that can be drawn to the two circles are

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is C 3

There are two circles $C_1$ and $C_2$ both are touching each other


So, the number of tangents that can be drawn to the given two circles are $3$