# SOLUTION: a tin of paint covers a surface area of 60m(cubed) and costs £4.50.Find the cost of painting the outside surface of a cylindrical gas holder of height 30m and radius 18m.The top of

Algebra ->  Algebra  -> Bodies-in-space -> SOLUTION: a tin of paint covers a surface area of 60m(cubed) and costs £4.50.Find the cost of painting the outside surface of a cylindrical gas holder of height 30m and radius 18m.The top of      Log On

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 Geometry: Bodies in space, right solid, cylinder, sphere Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Bodies-in-space Question 215315This question is from textbook higher GCSE mathematics : a tin of paint covers a surface area of 60m(cubed) and costs £4.50.Find the cost of painting the outside surface of a cylindrical gas holder of height 30m and radius 18m.The top of the gas holder is a flat circle.This question is from textbook higher GCSE mathematics Answer by RAY100(1637)   (Show Source): You can put this solution on YOUR website!Area of cylinder = area of top and bottom and side . A= 2(pi*r^2) + (2*pi*r*h) . A= 2pi(18)^2 + 2pi(18)(30) . A= 2035.75 + 3392.92 . A= 5428.67 m^2 . . Cost = 5428.67 m^2 * 4.5 # / 6m^2 = 4071.5025 # . . If we do not paint bottom,,A=pi * 18^2 = 1017.876 m^2 . subtract ,,,,cost = 1017.876 * 4.5/6 = 763.41 # . The total (without bottom) = 3308 # .