Help please ASAP I need to finish this

Answer:
Radius: 10 ft
Diameter: 20 ft
Area: 314.15 ft^2
Circumference: 62.83 ft
Step-by-step explanation:
The radius can be found using the diameter. The diameter is 20 feet which is the line that is given in the circle.
The radius(r) is equal to half the diameter(d):
r = d/2 --> r = 20/2 = 10 feet
The area(A) can be found using the radius(r) and pi or 3.14
A = pi(r^2) --> A = pi(10^2) = 314.15 feet^2
The circumference(C) is found by using the radius(r) and pi or 3.14
C = 2pi(r) --> C = 2pi(10) = 62.83 feet