Question

Help! The shaded sector below has am area of 4pi. FInd the perimeter of the sector
15 Points!

Answer 1

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

Answer 2

10.19

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