Answer:
The percentage is 
Step-by-step explanation:
Let
x-----> the number
we have

To find the percentage multiply by 100

I think you count the squares in the middle or radius ?
Answer:
Angle ABD
Step-by-step explanation:
I think it is so because the angles are aligned already so you what has the same value.
Answer: point C
Step-by-step explanation: the square root of 68 is 8.246and it keeps going with other digits