## 726 Area enclosed by parabola and straigh line | Centroid of Composite Area

**Problem 726**

Locate the centroid of the shaded area enclosed by the curve y^{2} = ax and the straight line shown in Fig. P-726. Hint: Observe that the curve y^{2} = ax relative to the y-axis is of the form y = kx^{2} with respect to the x-axis.