Answer:
I believe the term is the index number
Answer: 452.39m²
Step-by-step explanation:A=4πr2=4·π·62≈452.39m²
Step-by-step explanation:
hello :
the n-ieme term is : An=A1×r^(n-1)
A1 the first term r : the common ratio
in this exercice : A1 =15 r = 1/3 n = 4
A4=15×(1/3)^(4) =15×4^4 =3840