Please submit your concern

Explanation:

Let radius of circle be r.

AC = 2.5 as radius bisects the chord.

Using statement A alone:

We have been told that AB is not a diameter of the circle. But it does not give us any useful information to solve the problem.

So, statement A alone is not sufficient to answer the question.

Using statement B alone:

From the figure above, CE = 5

∴ OC = r − 5

∴ OA2 = OC2 + AC2

∴ r2 = (r − 5)2 + (2.5)2

Solving the above equation,

r = 3.125 cm

So, statement B alone is sufficient to answer the question.

Hence, option (a).

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