SOLUTION: If the maintenance men are going to paint a spherical water tower whose radius is 30 feet and each gallon of paint covers 150 square feet of metal, how many gallons of paint must t

Algebra ->  Surface-area -> SOLUTION: If the maintenance men are going to paint a spherical water tower whose radius is 30 feet and each gallon of paint covers 150 square feet of metal, how many gallons of paint must t      Log On


   



Question 327306: If the maintenance men are going to paint a spherical water tower whose radius is 30 feet and each gallon of paint covers 150 square feet of metal, how many gallons of paint must they have to give the tower one coat of paint?
Can you please help me with that question? thanks

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If the maintenance men are going to paint a spherical water tower whose radius is 30 feet and each gallon of paint covers 150 square feet of metal, how many gallons of paint must they have to give the tower one coat of paint?
-----------
Area of a sphere = 4*pi*r^2
= 4pi*900 = 3600pi
=~ 11310 sq ft
11310/150 = 75.4 gallons