Answer:
Perimeter of the poster is 18 foot.
Explanation:
Lengths of the poster = 1 inches
Width of the poster = 8 inches
Poster is in the form of a rectangle.
And the expression that defines the perimeter of the poster is,
Perimeter = 2(Length + Width)
By substituting the values of length and width in the expression,
Perimeter = 2(1 + 8)
= 2(9)
= 18 foot
Therefore, perimeter of the poster is 18 foot.