Answer with explanation:
It is given that , a yard includes a border path of a fixed width around a lawn.
Total Area of the Yard =(6+2 x)×(9+2 x)
As, width is fixed.
And, Area= Length × Breadth
=[2 x + 6]×[(2 x +3) +6]
or
=[(2 x +3) +6]× [2 x +6]
So, either ,Length = 2 x +9 or,2 x +6
or, Breadth = 2 x + 6 or 2 x +9
So,Number 6, represent : the width of the border from lawn to yard.
Option B: the width of the border.