8. Find the area of the coloured sector

A spinner has \(six\) sectors, half of which are blue and half of which are black. If the radius of the spinner is 3.6 \(cm\), what is the area of the sectors?  [Use $\mathrm{\pi }$ \(= \)\(22/7\)].

 

 

Area of the blue sectors is ${\mathit{cm}}^2$.