the number of square feet one gallon of paint covers.?

Answer 1

1. 14 × 20 = 280 square feet.
2. Divide that number by 350 or 400 (the estimated square feet covered per gallon) to figure out how many gallons of paint you need.

"estimated square feet covered per gallon" is dependent on the quality and thickness of the paint.

Check out the link for more detail calculations http://www.almanac.com/edpicks.0698/howmuchpaint.html

Hope this helps.

-J

Answer 2

Most brands of paint have this information printed on the label. Different types of paint have different types of coverage, depending upon the characteristics (color, viscosity, density, etc.).