PLS HELP I HAVE LEGIT 20 MINUTES TO FINISH BY 11:59 IM PANICKING PLS HELP WITH THESE QUESTIONS

Answer:
24.3 units
Step-by-step explanation:
Distance between points A and B= 9 units
Distance between points B and C= 10.29563 units (10.3 rounded)
Distance between points A and C=5 units
=24.3 units
Hope this helps! :)