This diagram shows the triangle \(ABC \), with \(AB=8cm\), \(AC=11cm\) and \(\angle BAC= 0.7\) radians. The arc \(BD \), where \(D \) lies on \(AC\), is an arc of a cycle with centre \(A \) and radius \(8cm\). The region \(R\), shown shaded in the diagram, is bounded by the straight lines \(BC\) and \(CD\) and the arc \(BD\).
Find
(a) The length of arc \(BD \),
\(BD =\)\(cm\)
Correct
Incorrect
Question 2 of 3
2. Question
4 point(s)
(b) The perimeter of \(R\), dividing your answer to \(3\) significant figures.
\(P_R =\) \( cm \)
Correct
Incorrect
Question 3 of 3
3. Question
5 point(s)
(c) The area of \(R \), giving your answer to \(3\) significant figures.