It would be d because:
C=2(3.14)(5)
And all of that would equal 31.4 meters
Explanation:
The Americans and the Russians
Poopy poop poop poop poop
Introvert= Less sociable, keeps more to self
Extrovert= outgoing, sociable
Personally-
I would say I am about 60% an introvert and 40% and extrovert. When I am at school, I try to keep more to myself. I like to be by myself and focus on schoolwork. When I am with friends I tend to be more extroverted because I am comfortable with them. I talk more, not only to them, but also to people i do not know.