Help Guys which choice is the answer show the work that supports the answer :)??:((( i will extra points if ur not sure of the answer plz don’t answer the question ty:)

Answer:
A
Step-by-step explanation:
area=πr²=π×2²=4π≈4×3.14≈12.56 km²
Answer:
12.56
Step-by-step explanation:
area of circle = pi r^ 2
pi= 22/7
r= 2km
22/7×2×2
22/7×4
22/28
12.56 is ans