The interior of a building is in the form of cylinder of diameter 4.3  m and 3.8 m height, surmou...

The interior of a building is in the form of cylinder of diameter 4.3  m and 3.8 m height, surmounted by a cone whose vertical angle is a right angle.
(i) Find the area of the surface.
(ii) Also, find the volume of building.

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