Answer:
Mrs. Johnson needs 52 feet of wallpaper border to cover her entire kitchen.
Step-by-step explanation:
Mrs. Johnson is decorating her rectangular kitchen with wallpaper border and the dimensions of her kitchen are 12 feet by 14 feet.
We are asked to find the amount of wallpaper border needed to cover the entire kitchen.
Since the kitchen is rectangular in shape, we can use the formula for perimeter of rectangle that would give us the required amount of wallpaper border for the rectangular kitchen.
The perimeter of a rectangular shape is given by
P = 2(W + L)
or
P = 2W + 2L
Where W is the width and L is the length.
We are given width = 12 feet and Length = 14 feet
So the perimeter is
P = 2×12 + 2×14
P = 24 + 28
P = 52 feet
Therefore, Mrs. Johnson needs 52 feet of wallpaper border to cover her entire kitchen.