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Today, 18:59

A compnay has a spherical storage tank which is in need of painting. The radius of the tank is 36ft. The type of paint used will cover approximatley 160 square feet per a gallon. How many gallons of paint will be needed? (not:paint can only be purchased in full gallons.)

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  1. Today, 19:20
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    The surface area of a sphere is: 4pr^2

    (4p (36^2) ft^2) (gal/160ft^2)

    (5184p ft^2) (gal/160ft^2) = 32.4p gal which is approximately:

    101.78 gal

    So the company must purchase 102 gallons of paint.
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