Answer: 158.2874
Step-by-step explanation:
The area of a circle is pi times the radius squared (A = π r²).
Our radius is 7.1 so we square it which is basically the equivalent of doing 7.1 x 7.1 which equals 50.41 then we multiply this by pi which is 3.14 so it 50.41 x 3.14 = 158.2874