Question

two circles touch externally then show that the distance between their circles is equal to sum of their radii

Answer 1

Answer:

• Find the distance between the centres. Add the radii.

• If the result is the same, then the circles touch externally.

• Subtract the radii. If the result is the same, then the circles touch internally.

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Answer 2

Answer:

Join the centre of circle you will see that it will be equal to op+o'p ie sum of radii of the two