2008 June C2 Q9
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Earned Point(s): 0 of 0, (0) The diagram above shows \(ABC\), a sector of a circle with centre \(A\) and radius \(7cm\). Given that the size of \(\angle BAC\) is exactly \(0.8\) radius find (a) The length of arc \(BC\). The length of arc \(BC=\) \(cm\) (b) The area of sector \(ABC\). The area of sector \(ABC=\) \(cm^2 \) The point \(D\) is the midpoint of \(AC\). The region \(R\), shown shaded in the diagram above , is bounded by \(CD, DB\) and the \(BC\). Find (c) the perimeter of \(R\), giving your answer to \(3\) significant figures. perimeter of \(R=\) \(cm\) (d) the area of \(R\), giving your answer to \(3\) significant figures. area of \(R=\) \(cm^2 \)
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