Answer: 2048 ft
Step-by-step explanation:
Given
The length of each sidewalk is [tex]L=256\ ft[/tex]
There are eight sections of the sidewalk
The total length of the sidewalk is [tex]L+L+\ldots 8\ \text{times}[/tex]
[tex]\Rightarrow 8\times L=8\times 256\\\Rightarrow 2048\ ft[/tex]
Total length of the entire sidewalk is 2048 ft