Answer:
-84-12i
Step-by-step explanation:
The one you have is the answer :)
Answer:

I don't really remember this very well, because it confusing me
Answer:
Step-by-step explanation:
Answer:
Circunferencie can be writen also as a fuction of the diameter of the circle
C = pi*D
Where
D = circunferene diameter
Step-by-step explanation:
C = 2.pi.R = 2.R.pi
In a circle 2.R = D
So,
C = pi.D
Answer: C
Step-by-step explanation: