I think this attachment will help you
Answer:
v=2
Step-by-step explanation:
5v=10
v=2
Answer,a and b, sorry if they are wrong
Answer: Perimeter is when u add all around
Example: The perimeter of a square is 4,5,3,7
Add: 4+5+3+7 get 19
The perimeter will be 19
<ADB = 90 degrees
hope it helps