# If a particle makes 1.5 revolution in a circular path of radius 2cm. The angular displacement is...??

$\theta = \left(1.5\right) \left(2 \pi\right) = 3 \pi$
radius is $r = 2$cm
angle of rotation per revolution is $2 \pi$
For 1.5 revolutions, the angle of rotation would be $\theta = \left(1.5\right) \left(2 \pi\right) = 3 \pi$