a room is 24 feet long,18 feet wide,and 9 feet high.how many square yards of wallpapaer the four walls of the room?
2(24 * 9) + 2(18 * 9) = ?
(Four walls -- two 24 by 9 and two 18 by 9, equal the amount of wallpaper needed).
Don't forget to convert the result from feet to yards.
To calculate the number of square yards of wallpaper needed for the four walls of the room, you need to determine the total surface area of the walls.
First, let's find the surface area of one wall.
The formula for finding the surface area of a rectangular wall is:
Surface Area = Length × Height
For one wall, the length is 24 feet and the height is 9 feet. Therefore, the surface area of one wall is:
Surface Area of one wall = 24 feet × 9 feet = 216 square feet
Since there are four walls in the room, multiply the surface area of one wall by 4 to find the total surface area of all four walls:
Total Surface Area of the four walls = 216 square feet × 4 = 864 square feet
Now, we need to convert the square feet into square yards since the wallpaper is usually sold in square yards.
Since 1 yard is equal to 3 feet, we can convert square feet to square yards by dividing the area in square feet by 9 (since 1 square yard is equal to 9 square feet):
Total Surface Area in square yards = 864 square feet ÷ 9 = 96 square yards
Therefore, you will need 96 square yards of wallpaper to cover the four walls of the room.