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March 28, 2017

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A cylindrical water tower with a conical top and hemispheric bottom needs to be painted. If the cost is 2.19 per square foot, how much does it cost (to the nearest dollar) to paint the tank?

  • geometry - ,

    surface area of tower
    = surface area of "sleeve" of cylinder + half a sphere + lateral surface area of cone

    Since you don't give me any dimensions, that is all I can give you.

  • geometry - ,

    Oops, sorry, I forgot to give the dimensions.


    The dimensions of the cone are 2ft. high and 3.2 ft. at the slant.

    The dimensions of the cylinder are 5ft. across and 6 ft. tall.

    I wasn't sure if I needed to figure Total Surface Area or Lateral Surface Area, or both.

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