Answer:
A = 216.314
C = 52.124
Explanation:
We know the radius so now we need to know the diameter. So multiple the radius by 2.
R = 8.3
D = 16.6
Let's find the area first
A = 3.14×r²
A = 3.14×68.89
A = 216.314
Now find the circumference
A = 3.14×d
A = 3.14×16.6
A = 52.124