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OpenStudy (anonymous):
The radius of circle O is 18, and OC = 13. Find AB. Round to the nearest tenth, if necessary. (The figure is not drawn to scale.)
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OpenStudy (anonymous):
OpenStudy (anonymous):
I think it is C but not completely sure.
OpenStudy (anonymous):
By Pythagoras' theorem \[OB^{2} = CB^{2} + OC^{2}\] So AB = 2CB and you know the answer
OpenStudy (anonymous):
thank u! i get confused with the order of formulas ...
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