The PDF below is an excerpt from the NASA document: DC-8, Airborne Laboratory Experimenter Handbook. Draw the outer envelope of the fuselage cross-section (it will consist of two arcs). Create a polyline from the circles. NOTE: The distance between the two arc centers is not given on the drawing. You will need to deduce this distance by geometric construction.
Determine the cross-sectional area (in square inches) of the aircraft at the location of this cutting plane.