Two equal circles, each of radius \(\quantity{10}{cm}\), have centres at \(A\) and \(B\) respectively and the length of \(AB\) is \(\quantity{17.4}{cm}\). The circles intersect at \(C\) and \(D\). Find

- the angle \(CBA\) and express it in radians correct to three significant figures,
- the area of the minor sector \(BCD\),
- the area common to both circles.