Question

Math help pls

Answer 1

@Vocaloid

Answer 2

gonna make the assumption that AB is the diameter, otherwise this is unsolvable

anyway, length of an arc = (theta/360) * 2 * pi * r
where theta is the central angle intersecting the arc

Answer 3

@Vocaloid 5pi?

Answer 4

theta = <APC = 150 (remember, the diameter AB makes an arc of 180)
radius is (36/2)

check your calculations again

Answer 5

@Vocaloid 30pi?

Answer 6

(150/360) * 2 * pi * (36/2) = 15pi