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One gallon of paint will cover 400 square feet. How many gallons of paint are needed to cover a wall that is 8 feet high and 100 feet long?

Sagot :

2 gallons of paint are needed.

Granted there are no doors or windows, a 8ft by 100ft wall will have an area of 800 square feet (multiply length * height, so 8 * 100 = 800).

If each gallon of paint covers 400 square feet, we need to divide our area by 400. 800/400 = 2.

So, 2 gallons of paint are needed to cover the wall.