Question

Can somebody help me

Answer 1

AB ≈ 3.14 ft

Explanation:

The arc AB is calculated as

AB = circumference of circle × fraction of circle

= πd ×
`(45)/(360)` ( where d is the diameter )

= 8π ×
`(1)/(8)`

= π

≈ 3.14 ft ( to 2 dec. places )