Question

Can someone help me? I'll reward points + brainalist

Answer 1

For number two, answer is: r=2
A= π•r^2
C=2 πr
2r=r^2
If r=2 then,
2•2=2^2
4=4
Answer for number three is: A=5981m^2
Explanation for number 3 in photo below.
Good luck.