Alright. Let's start with Circumference.
The formula for that is 2piR.
Radius of circle is half of diameter. 14/2=7
Plug it in, 2*pi*7
Simplify, answer is 14 pi
Area, formula is pi(R*R) (Sorry can't do squared)
Taking from before, pi*49
Simplify, it's 49 pi
Total: it's C=14 pi, A= 49 pi, or choice A
Hope this helped!
