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Question: Radius of the circle having centre (3, 4) and touching the circle x<sup>2</sup> + y<sup>2</sup> = 4 ...

Radius of the circle having centre (3, 4) and touching the circle x2 + y2 = 4 can be

A

32\frac{3}{2}

B

17

C

3

D

1−32\frac{1 - \sqrt{3}}{2}

Answer

3

Explanation

Solution

r =(3−0)2+(4−0)2\sqrt{(3 - 0)^{2} + (4 - 0)^{2}}– 2 = 3