You are painting a room that is 16 feet long, 10 feet wide, and 8 feet high. On the walls of the room, there are two windows that are each 2 feet wide and 5 feet tall, and a door that is 4 feet wide and 7 feet tall. A gallon of paint covers 350 square feet. How many gallons of paint do you need to cover the 4 walls with one coat of paint, not including the windows and the door

1.05 gallons

Step-by-step explanation:

Given that:

Dimension of wall : 16 by 10 by 8

Dimension of window : 2 by 5 feets

Number of windows = 2

Dimension of door = 4 by 7 feets

One gallon of paint = 350 ft²

Area of the four walls :

2 * height * (length + Width)

2 * 8 * (16 + 10)

2 * 8 * 26 = 416 ft²

Area of window :

2 * (2 * 5) = 20ft²

Area of door :

4 * 7 = 28 feet²

Area of wall without door and windows :

(416 - 20 - 28)ft² = 368 ft²

Gallon of paint required :

368 ft² / 350 ft²

= 1.05 gallons