There are 360 degrees in one circle.
To find out what proportion AB is compared to the rest of the circumference, divide 45 degrees by 360 degrees.
45 / 360
Now, let's simplify this fraction.
1 / 8
The length of AB is 1/8 of the circumference.
Multiply the circumference by 1/8.
128 * 1/8 = 16
The length of AB is 16 ft.
Have an awesome day! :)
