Respuesta :

Answer: The answer is 60 because when you subtract 100 from 40 you will get 60.

mhanifa

Answer:

10.19

Step-by-step explanation:

40°=360°/9=2π/9

area of circle= πr²

Area of sector= πr²/9

  • πr²/9=4π ⇒ r²=4*9 ⇒ r²=36 ⇒ r=6

P circle= 2πr

  • P sector= 2r+2πr/9= 6+2*3.14*6/9 = 6+4.19= 10.19