Development of Lateral Surfaces of Solids Square Pyramid 01

A square pyramid of side of base 45 mm and altitude 70 mm is resting on its base with 2 sides of the base parallel to VP. The pyramid is cut by a section plane which is perpendicular to the VP and inclined at 40° to the HP. The cutting plane bisects the axis of the pyramid. Obtain the development of the lateral surfaces of the truncated pyramid.