- A1
- B2
- C3
- D0
Step-by-Step Solution
Distance between centres (1) < difference of radii (3-1=2), so the smaller circle lies fully inside the larger without touching, giving 0 common tangents.
Answer: D) 0
Two coins of radii 3 cm and 1 cm are placed so that the smaller coin lies entirely inside the larger one, with their centres 1 cm apart (so they do NOT touch and one is fully inside the other).
How many common tangents can be drawn to the two coins?
Class 10Number of Tangents from a PointGeometry
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