document.write( "Question 251066: if 1 gallon of paint covers 400 square feet, about how many gallons of paint are needed to paint the outside of a spherical tank of diameter of 20 feet? \n" ); document.write( "
Algebra.Com's Answer #182811 by richwmiller(17219)\"\" \"About 
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find the area of the sphere.
\n" ); document.write( "divide that by 400
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