The ones with a square in a picture is a 90 degree angle the rest are a 180
Order is operation is PEMDAS which means Parentheses, Exponents Mulitiplication,division,Addition and Subtraction so you follow the order whether they exist or not.
So (41-3^2)-(4+4)=
41-9-8 = 32-8 = 24
Answer:
The question asks arc length:

Dividing by

Because 360°(by formula)
Therefore:

Good luck!
Intelligent Muslim,
From Uzbekistan.