Answer:
6
Step-by-step explanation:
The circumference of a circle is 
, so
. We can use this because the area of a circle is
. Thus,
.
Answer: letter D. Most of the mass of an atom comes from elctron cloud
Step-by-step explanation: your welcome and have a good day
Answer:
-3
Step-by-step explanation:
3 + (-3) = 0
Answer:
c
Step-by-step explanation: