By Mansi Yadav

Verified by Ajay Kumar

Two circles of radii 6 cm and 4 cm touch externally. How many common tangents can be drawn?

  1. 1

  2. 2

  3. 3

  4. 4

Answer: C

Solution

Solution: Two separate non-touching circles have four common tangents. When the circles touch externally, the internal common tangent at the point of contact becomes a single shared tangent, so the total number is 3. Trick: Two externally touching circles have 3 common tangents.

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