SOLUTION: The inside of a cylindrical tank used to hold resin must be coated with a corrosion preventative. The tank measures 7 ft in diameter and 5 ft in height. One gallon of corrosion

Algebra ->  Surface-area -> SOLUTION: The inside of a cylindrical tank used to hold resin must be coated with a corrosion preventative. The tank measures 7 ft in diameter and 5 ft in height. One gallon of corrosion       Log On


   



Question 930969: The inside of a cylindrical tank used to hold resin
must be coated with a corrosion preventative. The
tank measures 7 ft in diameter and 5 ft in height.
One gallon of corrosion preventative will cover
10 ft2. How many gallons will be needed to coat the
tank? Assume that the sides, top, and bottom of the
tank will be treated.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Find the area of the inside of the tank.
It's a cylinder + the top and the bottom.
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For a cylinder:
Area+=+2pi%2Ar%2Ah
For the ends:
Area+=+pi%2Ar%5E2