A Cessna 172 private airplane. it has a 5 ft chord length wing with a NACA 2412 cross section. the cruising speed is 130 mi/hr. At zero angle of attack , the wing lift coefficient is 0.247. If the plane is designed for a maximum weight at takeoff of 1700 lbs, find the total wing span of the plane (tip to tip) when the cabin is 4 feet wide.
also find the engine thrust required at 130 mi/hr if the cabin is approximated as an ellipsoid with L/D=4 and the drag coefficient is 0.04. [final answer 328 lbf]