Use the circumference formula with diameter d:

\(\displaystyle{C}=π{d}\)

There are 65 turns so we consider 65 times the circumference:

\(\displaystyle{65}×π{\left({27.20}\right)}={1768}π\) inches

We need the answer in feet. Recall that 1 foot = 12 inches so:

\(\displaystyle{1768}π\in{c}{h}{e}{s}×{1}{f}\frac{{t}}{{12}}\in.={\left({442}

\(\displaystyle{C}=π{d}\)

There are 65 turns so we consider 65 times the circumference:

\(\displaystyle{65}×π{\left({27.20}\right)}={1768}π\) inches

We need the answer in feet. Recall that 1 foot = 12 inches so:

\(\displaystyle{1768}π\in{c}{h}{e}{s}×{1}{f}\frac{{t}}{{12}}\in.={\left({442}