Answer:
3rd one
Step-by-step explanation:
By substitution,
and so on, so that
[tex]g(n)=6.1^{n-1}g(1)=2.7\cdot6.1^{n-1}
12.56
area of a circle is A=πr^2
radius is 2
a= 3.14 (2)^2
=3.14 x 4
=12.56