AS we know that:

And we have the volume and we can calculate the SA,,,
So that, we can conclude:

Are you
satisfied?
Answer:
143°
Step-by-step explanation:
=90°+53°
=143°
Answer:
A. 
Step-by-step explanation:
Each mark represent 0.1 unit, so if you count from 0 to
you get 0.5 that is exactly the same that
(for convention the left of the 0 is taken as negative and the right as positive).