MAY SOMEONE JUST PLEASE HELP ME. I really need help figuring the length of SO

Answer:
The length of SO is 5.
Step-by-step Explanation:
We know that,
Keeping this in mind, if:
[tex]\hookrightarrow[/tex] SQ = 10
[tex]\hookrightarrow[/tex] SO = ½ × 10
[tex]\hookrightarrow[/tex] SO = 5