L=x/4 -6
Perimeter= Length x Width
Width=x
Length= x/4 -6
P=LxW
P=(x/4-6)x(x)
You need to ask your teacher for any help and to evaluate and double check each step.
I do not believe so. 3 Feet = 1 Yard and 16 inches is 1 Foot and 4 Inches. 1 foot 4 inches is not enough to make another yard for 4 yards and 4 inches.