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.)
1 answer:
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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