If is the radius and is the height of the frustum, then:
(i) The volume of the frustum of the circular cylinder
(ii) The curved surface area of the frustum
(iii) The total surface area = curved surface area + area of the ends
A circular cylinder having a radius of 2.3m is cut in the shape of a frustum with . Find the volume and the lateral surface area.
(b) Curved surface area