You just need to multiply length times width to get the area. This will work out to 2915 square feet.
54*5*2= 540 ft3
14' x 40' = 560 square feet
10.8 x 8 = 86.4 square feet.
220 feet x 25 feet = 5500 square feet
110 x 300 feet = 33,000 square feet.
10' x 18' = 180 square feet.
13 x 18 = 234 square feet.
19' x 15' = 285 square feet
20 feet x 10 feet = 200 square feet
1.4 feet x 22 feet is 30.8 square feet
4' X 6= 24 square feet.
12 feet x 12 feet = 144 square feet.