A south facing window of height 2.2 m and width 1.3 m is flush with the outside surface of a wall. A solid overhang of length 1.8 m is located symmetrically, 0.16 m above the top edge of the window....

A south facing window of height 2.2 m and width 1.3 m is flush with the outside surface of a wall. A solid overhang of length 1.8 m is located symmetrically, 0.16 m above the top edge of the window. The overhang extends 0.5 m out of the wall. The northern latitude of the location is 40°. Calculate the unshaded area of the window at 11 a.m. solar time on June 10.