Circles of radii 2, 2, 1 touch each othe...

Circles of radii `2, 2, 1` touch each other externally. If a circle of radius `r` touches all the three circles externally,then `r` is

1.5

2.5

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The correct Answer is:

formed triangle will be right angle whose sides are 3,4,5
So, circumradius =`("length of hypotenuse")/2=2.5

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