Answer:
C = 62.8
Explanation:
C = 2πr
π = 3.14
diameter = 20 ft
r = 10 ft
Get r or the radius by taking half of the diameter which is 20 ft and get 10 ft.
Plug this information in the formula and multiply to get C or the circumference.
C = 2(3.14)(10)
C = 62.8