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?
(2 * 3.5) + (2 * 4) * 3 = _______ feet
To calculate the number of feet of wallpaper border needed to go around the walls of a rectangular room, you need to determine the perimeter of the room and then convert it to feet.
First, let's find the perimeter of the room. The perimeter of a rectangle is calculated by adding together the lengths of all four sides.
Given that the length of the room is 3 1/2 yards and the width is 4 yards, we can calculate the perimeter:
Perimeter = 2 * (Length + Width)
Converting 3 1/2 yards to yards and inches, we have:
3 1/2 yards = 3 yards + 1/2 yard = 3 yards + (1/2 * 3 feet) = 3 yards + 1.5 feet = 4.5 feet
Now, substituting the values into the perimeter formula:
Perimeter = 2 * (4.5 feet + 4 feet)
Perimeter = 2 * (8.5 feet)
Perimeter = 17 feet
Therefore, the perimeter of the room is 17 feet. This is the length of the wallpaper border needed to go around the walls of the room.