need help in geometry (1 question)?

The radius of circle O is 24, and OC = 11. Find AB. Round to the nearest tenth, if necessary. The figure is not drawn to scale.

Answer 1

OB is a radius of the circle. Its length is 24. OC is given as 11.
These are the hypotenuse and one side of a right triangle.

The length of the remaining side (BC) is:
24^2 – 11^2
576 – 121 = 455
BC = 21.33

So AB is twice BC = 42.7

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