Homework Help: math

Posted by kitOy on Sunday, February 19, 2012 at 9:05pm.

1. Find the expense at 60 cents a square foot of polishing the curved surface of a marble column in the shape of the frustum of a right circular cone whose slant height is 12 ft. and the radii of whose bases are 3ft 6in and 2ft 4in respectively.

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