how many feet of wallpaper border are needed to go around the walls of a rectangular room that measures 3 1/2 yd by 4 yd
My goodness! What don't you understand about my answer?
http://www.jiskha.com/display.cgi?id=1495661066
To find the number of feet of wallpaper border needed to go around the walls of a rectangular room, we need to calculate the perimeter of the room.
First, let's convert the dimensions from yards to feet. There are 3 feet in 1 yard.
So, the length of the room will be:
Length = 3 1/2 yards * 3 feet/1 yard = 10.5 feet
Similarly, the width of the room will be:
Width = 4 yards * 3 feet/1 yard = 12 feet
Now, let's calculate the perimeter of the room using the formula:
Perimeter = 2 * (Length + Width)
Substituting in the values:
Perimeter = 2 * (10.5 feet + 12 feet)
Perimeter = 2 * 22.5 feet
Perimeter = 45 feet
Therefore, you would need 45 feet of wallpaper border to go around the walls of the rectangular room.