Find the Centroid of the Region Bounded By $y = \cos x , y = 0 \text { and } 0 \leq x \leq \frac { \pi } { 2 }$

Find the centroid of the region bounded by $y = \cos x , y = 0 \text { and } 0 \leq x \leq \frac { \pi } { 2 }$ .