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Lê Quốc Trần Anh Coordinator

16/03/2018 at 07:44
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In circle O, the lengths of chords AB and BC are equal and m\(\angle\)ABC = 90 degrees. Given that circle O has a radius of 3 meters, what is the length of arc ABC? Express your answer in terms of π.



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    Doan Le Minh Hong moderators 17/03/2018 at 04:14

    A B C O

    \(\widehat{ABC}=90^o \Rightarrow O\in AC \\\Rightarrow The\hskip0.1cmlength\hskip0.1cm of\hskip0.1cm arc \hskip0.1cmABC\hskip0.1cmis\\ l= \dfrac12\times2\pi\times3=3\pi \hskip0.1cm(meters)\)

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