Respuesta :

Answer:

31.85 square feet

Step-by-step explanation:

Finding the radius :

  • C = 2πr
  • 20 = 2πr
  • r = 20/2π
  • r = 10/π

Substituting in the area formula :

  • A = πr²
  • A = π × 10/π x 10/π
  • A = 100/π
  • A = 100/3.14
  • A = 31.85 square feet

So

  • 2πr=20
  • πr=10
  • r=10/π

Now

Area

  • πr²
  • πr(r)
  • 10r
  • 10(10/π)
  • 100/π
  • 31.8ft²