The Cessna Cardinal, a single- engine light plane, has a wing with an area of 16.2 m and an aspect ratio of 7.31. Assume that the span efficiency factor is 0.72. If the airplane is flying at standard sea-level conditions with a velocity of 230 km/h, what is the induced drag when the total weight is 9800 N? When a symmetrical airfoil section (i.e. an infinite span wing) is at an angle of attack of 4 degrees, the lift coefficient is 1. Calculate the angle of attack at which a wing whose wing span of 35.8 ft. and wing area of 174 ft would have to operate in order to generate the same lift coefficient. Assume this wing generates an elliptical lift distribution.