Area of a Circular Shaded Region

Area of a Circular Shaded Region

Secondary 3

In the diagram below, \(AB=15\) cm, \(OA=7\) cm and \(\angle COB=0.7\) rad.
Calculate

the length of the arc \(BC\),
the area of the shaded region.

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Answer:(i) \(15.4\text{ cm}\) (ii) \(152\dfrac14\text{ cm}^2\)

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