Question

Need help please. Thank you

Answer 1

1)
`(8\pi )/(3)` or 8.38

2)
`(9\pi )/(8)` or 3.53

3) 4
`\pi` or 12.57

Explanation:

The formula for arc length is
`2\pi r((angle)/(360))`

1) 2
`\pi`(4)×
`(120)/(360)`

2)
`2\pi (1.5)`×
`(135)/(360)`

3)
`2\pi(3)`×
`(240)/(360)`