SOLUTION: 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 feet and

Question 575073: 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 feet and the radii of whose bases are 3 feet 6 inches and 2 feet 4 inches respectively.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
The lateral surface area (S) of a frustum of a right circular cone is given by:
where: and are the radii of the top and bottom respectively and s is the slant height.
Use } approximation.

sq.ft.
The cost of polishing, at $0.60 per square foot is:
226.08($0.60) = $135.65
RELATED QUESTIONS
Find the total cost of polishing , if it cost 10 php per square meter to polish the... (answered by KMST)

A marble column in the shape of a right circular cylinder is 8m high and 80cm in... (answered by addingup,ikleyn,MathTherapy)

It cost Rs 2200 to paint inner curved surface of cylinder 10m deep at the rate of 20 per... (answered by stanbon)

A pillar in the shape of a cylinder has 21cm radius and 3m height.Find the curved surface (answered by Cromlix)

Find the curved surface area of a bucket 16cm in diameter at the top, 8cm in diameter at... (answered by Alan3354)

the curved surface area of a cylindrical pillar is 264 square metres find its hieght and... (answered by Alan3354)

Find the percentage decrease in the curved surface area of square of its diameter is... (answered by macston)

a table cover,4m by 2m is spread on a meeting table.if 25cm is hanging all around the... (answered by jorel1380)

A metal pipe is 77 cm long, the inner diameter of the cross-section is 4cm and the outer... (answered by Alan3354)