Answer:
153.86
Step-by-step explanation:
To find the area of a circle, we use the formula .
d=14
r=d/2
r=7
153.86
We are given that
An ion has a charge of +7
and a neutral has charge always 0
so, change is charge = ion charge - neutral change
so, we can plug values
change is charge = +7 -0
change is charge = 7
so, option-C..................Answer
Answer:
First is correct
Second is perimeter
Why? Because perimeter is the surounding part