Answer :
Formula for perimeter of triangle: P=2width+2length
width=x
length=y
446=2x+2y
y+5=3x | subtract 5
y=3x-5
446=2x+2(3x-5)
446=2x+6x-10
446=8x-10 | add 10
456=8x | divide\ by\ 8
x=57
y=3x-5=3*57-5=166
Length=166 yards
width=57 yards
width=x
length=y
446=2x+2y
y+5=3x | subtract 5
y=3x-5
446=2x+2(3x-5)
446=2x+6x-10
446=8x-10 | add 10
456=8x | divide\ by\ 8
x=57
y=3x-5=3*57-5=166
Length=166 yards
width=57 yards