pleaseeeeee helpppppp i dont understand

Pleaseeeeee Helpppppp I Dont Understand class=

Answer :

Answer: C. 12

Step-by-step explanation: Hope this help :D

Answer:

12 or 10

Step-by-step explanation:

dhonestly this make no sense cause it should be 20. but maybe you can divide by 2 and get 10 or sum like that i tried.