Answer:
27.5
Step-by-step explanation:
To find the mean you basically just add all of the numbers then divide by how many there are.
So, for this problem, 19+22+24+45=110
110/4=27.5
Hope this helped!!
2/3
Answer: Associative property
1,2,5
11 cm
To find radius just divide diameter of 22 by 2. The answer will be 11.