Respuesta :

Answer: 1.radius: 5.5

Diameter: 11ft

Area : 2pi (r)^2 = 2 pi (5.5)^2=190.06

2. Radius : 65

Diameter:130

Area : 2pi (65)^2= 8450 pi

3. Radius :28

Diameter:56

Area:1568 pi

Step-by-step explanation: