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The line 2x-y+1=0 is tangent to the circ...

The line `2x-y+1=0` is tangent to the circle at the point (2, 5) and the centre of the circle lies on `x-2y=4.` The square of the radius of the circle is

A

45

B

75

C

20

D

50

Text Solution

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The correct Answer is:
A
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