725 Centroid of windlift of airplane wing | Centroid of area

$R = \frac{2}{3}bh = \frac{2}{3}(16)(360)$

$R = 3840 \, \text{ lb}$           answer
 

$\bar{x} = \text{ centroid of parabola}$

$x = \frac{3}{5}h = \frac{3}{5}(16)$

$x = 9.6 \, \text{ ft}$           answer