24 miles
Explanation
we have a rigth triangle, so we can use the Pythaogram theorem,
it states
[tex]a^2+b^2=c^2[/tex]
then,
Step 1
let x represents the uinknow value,
hypotensuse=74 miles
leg1=70 miles
leg2=x
now, replace
[tex]\begin{gathered} a^2+b^2=c^2 \\ 70^2+x^2=74^2 \\ 4900+x^2=5476 \\ \text{subtract 4900 in both sides} \\ 4900+x^2-4900=5476-4900 \\ x^2=576 \\ \text{square root in both sides} \\ \sqrt[]{x^2}=\sqrt[]{576} \\ x=24 \end{gathered}[/tex]
hence, the distance from Oakdale to the airport is 24 miles.
I hope this helps you
