The radii of the circular ends of a solid frustum of a cone are 33 cm and 27 cm and its slant height is 10 cm. Find its total surface area.
Slant height of frustum cone, l = 10cm
Radii of circular ends of frustum cone: r’ = 33cm and r’’ = 27cm
Total surface area = π(r’ + r’’)l + π r’2 + π r’’2
= π(33 + 27)10 + π (33)2 + π (27)2
= 7599.42cm2