In a circle with centre at O (0,0) 2. an...

In a circle with centre at O (0,0) 2. and radius 5 cm, AB is a chord of length 8 cm. If OM is perpendicular to AB, then the length of OM is:

A

`2.5 cm`.

B

`3 cm`.

C

`4 cm`.

D

`1 cm. `

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Verified by Experts

The correct Answer is:

B

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