Answer :
Lets draw a picture of our tennis court:
The Perimeter P of the tennis court is
[tex]\begin{gathered} P=78+78+36+36 \\ P=228\text{ ft} \end{gathered}[/tex]Since Sydney runs along the edge of the court twice, she runs 2xP, that is, 2x228 ft. So, Sidney runs 456 feet.
