## 724 Rectangle, semicircle, quarter-circle, and triangle | Centroid of Composite Area

**Problem 724**

Find the coordinates of the centroid of the shaded area shown in Fig. P-724.

**Problem 724**

Find the coordinates of the centroid of the shaded area shown in Fig. P-724.

**Problem 722**

Locate the centroid of the shaded area in Fig. P-722 created by cutting a semicircle of diameter r from a quarter circle of radius r.