Respuesta :

Answer:

r = 0.85 ft
C = 5.3407075111026 ft
A = 2.2698006922186 ft²

Agenda:

r = radius
C = circumference
A = area
π = pi = 3.1415926535898
√ = square root

Formula:
Circumference of a circle:

C = 2πr = πd