how do i convert 2/3 revolution counterclockwise into radians?

Question

and then convert 3/5 revolution clockwise into radians as well?

Answer 1

1 revolution = 2 π radians
(2/3) revolution = (2/3) (2π) radians
= 4π/3 radians
= (4) (22/7) / (3) radians
= 88 / 21 radians
Answer = - 88 / 21 radians

3 / 5 revolution = (3 / 5) x 2π radians
= 6π / 5 radians
= 6 (22 / 7) / 5 radians
= 132 / 35 radians (clockwise)

Answer 2

2/3 * 2 pi rad = 4/3 pi rad

1 - 3/5 = 2/5
2/5 * 2 pi rad = 4/5 pi rad