What is the minimum distance between centers of two circles having radii 5 cm and 3 cm such that exactly three common tangents exist?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 8 cm
Exactly 3 common tangents ⇒ circles touch externally
Distance between centers = r₁ + r₂
Distance = 5 + 3
Distance = 8 cm