Answer:
The actual length of the wall is;
[tex]12\text{ feet}[/tex]Explanation:
Given that On an architect's blueprint 1 inch corresponds to 9 feet.
The ratio is;
[tex]r=\frac{9ft}{1\text{ inch}}[/tex]So, for 1 1/3 inches long wall on the blueprint, the actual length will be;
[tex]\begin{gathered} l=1\frac{1}{3}\text{inches }\times\frac{9ft}{1\text{ inch}} \\ l=\frac{4}{3}\text{ inch }\times\frac{9ft}{1\text{ inch}} \\ l=12\text{ feet} \end{gathered}[/tex]Therefore, the actual length of the wall is;
[tex]12\text{ feet}[/tex]