Respuesta :

Answer:

98

Step-by-step explanation:

Answer:

  • 6π ft

Step-by-step explanation:

Area:

  • A = πr²

Circumference:

  • C = 2πr

Substitute values in area:

  • πr² = 9π
  • r² = 9
  • r = 3 ft

Circumference is:

  • C = 2π*3 = 6π