1,600 square feet. To calculate square feet simply multiply length by width - the result is the area in square feet.
22x85 = (20 + 2)x(80 + 5) = 20x(80 + 5) + 2x(80+5) = 20x80 + 20x5 +2x80 + 2x5 = 1600 + 100 + 160 +10 = 1870 Although if I were doing it in my head I'd probably just do 22x85 = (20 + 2)*85 = 20*85 + 2*85 = 1700 + 170 = 1870.
-1540