question_answer

A circle touches the y-axis at the point (0, 4) and cuts the x-axis in a chord of length 6 units. The radius of the circle is [MP PET 1992]

A)            3    

B)            4

C)            5    

D)            6

Correct Answer: C

Solution :

           O? is centre and from figure,                    Radius \[(r)=\sqrt{{{(4)}^{2}}+{{(3)}^{2}}}=5\].