Answer :
circumference = 2 π r
138.16 = 2 π r
138.16/2π = 2π/2π r
21.98884694 =r
Diameter = r X 2
Diameter = 21.98884694 X 2
Diameter = 43.97769388
138.16 = 2 π r
138.16/2π = 2π/2π r
21.98884694 =r
Diameter = r X 2
Diameter = 21.98884694 X 2
Diameter = 43.97769388