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Maths Puzzle
Numerical Ability
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 20 feet?
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6+29.27-(-16)
Find the equation for the line with y-intercept 3 that is perpendicular to the line: y=2/3x-4 Possible answers: A) 2y=6-3x; B) 2y=3x+6; C) 3y=9-2x; D) 3y=2x+9